ERVs, Dehumidifiers, or Variable-Speed? The DFW Humidity Solution Guide

Why This Question Matters More Than Any Other HVAC Decision in DFW

Parts 1 and 2 of this series established why DFW's air is getting stickier — reservoirs, heat islands, a warming Gulf — and what that moisture does to every era of North Texas building stock. Now comes the question every homeowner and building owner eventually faces: what do I actually do about it?

The answer is not simple, and anyone who tells you it is probably doesn't understand the problem. DFW's humidity challenge has three distinct phases — peak summer, shoulder season, and "the system is running fine but the air still feels wrong" — and no single product solves all three equally well. Variable-speed inverter systems, energy recovery ventilators (ERVs), and whole-house dehumidifiers each occupy a specific lane. The mistake most DFW homeowners make is buying one of them thinking it solves everything, then wondering why the problem persists.

This guide covers what each solution actually does, what the performance science says, where each one fails, and how the three work together in a properly designed system for North Texas's specific moisture environment. It is the technical guide that should accompany every HVAC proposal in the DFW market.

The Science of Dehumidification: Two Jobs Your AC Is Supposed to Do

Before evaluating any solution, understand the fundamental problem. Air conditioning has two jobs: sensible cooling (removing heat to lower the temperature) and latent cooling (removing moisture to lower the humidity). On your thermostat, only one of those jobs has a setpoint. The other is largely ignored by the equipment unless it is specifically configured to address it.

Moisture removal happens mechanically when warm, humid air passes across a cold evaporator coil. Water vapor condenses on the cold surface and drips into the drain pan. The drier, cooler air returns to the space. The key variable determining how much moisture is removed per hour of operation is contact time — how long the air mass stays in contact with the cold coil surface.

A single-stage AC running at 100% capacity for eight minutes then cycling off for thirty-two minutes on a mild DFW spring day achieves almost no meaningful dehumidification. The coil never gets cold enough to condense aggressively, the short run time limits total condensation, and during the thirty-two-minute off cycle, the moisture that did condense on the coil re-evaporates back into the airstream as the coil warms up. The system then blows that moisture back through the building when it next cycles on. This is the single most common cause of high indoor humidity in DFW homes, and it happens in tens of thousands of houses every single shoulder season across the metroplex.^[1][2]

The solution is longer coil contact time. That is the core performance metric against which all humidity-control strategies must be measured.

Tool #1: Variable-Speed Inverter Systems

How They Actually Work

A variable-speed (inverter-driven) compressor is not simply a more efficient version of a single-stage unit. It is a fundamentally different operating philosophy. Where a single-stage compressor is binary — fully on or completely off — an inverter compressor modulates continuously between approximately 25% and 100% of rated capacity. In the language of electrical engineering, the inverter converts AC power to DC, then back to variable-frequency AC that drives the compressor motor at precisely the speed needed for the current load.^[3][4]

The practical consequence: on a mild April afternoon in Plano when the outdoor temperature is 78°F and the home needs only a fraction of the system's rated cooling capacity, the compressor runs at 30–35% for two or three hours rather than blasting at 100% for eight minutes. The evaporator coil stays cold. The air stays in contact with that cold coil. Moisture condenses continuously. Indoor humidity is managed in real time, not in occasional bursts.^[5][1]

What the Performance Science Actually Shows

The University of Texas at Tyler published a peer-reviewed study (Energy Reports, Kone and Fumo 2020) comparing dehumidification performance across three modes in a warm, humid climate. Results:^[6][7]

• Variable-speed mode: Maintained indoor RH between 50–52% on summer days
• Single-speed with enhanced dehumidification mode: Maintained 53–55% RH
• Standard single-speed: Performed significantly worse, unable to hold humidity near target on humid days

The real-world practitioner confirmation is equally direct. One widely cited field report describes replacing a single-stage condenser with a variable-speed condenser matched to the wrong (fixed-speed) air handler: no improvement in humidity. Same variable-speed condenser matched to a properly communicating variable-speed air handler: humidity immediately dropped from 58–62% to 51% on a day with hours of rain, 87°F highs, and 95% outdoor humidity. The lesson embedded in that experiment is critical and often missed by installers.^[6]

The air handler is not the afterthought. Carrier states it directly: variable-speed systems provide "premium humidity control, removing up to 400% more moisture than standard systems in worst-case conditions". That performance only materializes when the condenser's inverter compressor is matched with a communicating variable-speed air handler and blower motor — not when a variable-speed condenser is paired with a fixed-speed air handler to save money on the indoor unit.^[8]

The CFM Setting Is Everything

Even a fully matched variable-speed system will fail at humidity control if the installer programs the blower at the wrong airflow rate. The standard residential HVAC rule of thumb — 400 CFM per ton — is appropriate for dry climates where sensible load dominates. In DFW's humid climate zone, 300–375 CFM per ton is the correct range for humidity-focused operation.^[9]

Why? Lower airflow means slower air passing over the evaporator coil, which means more contact time per cubic foot of air, which means more moisture removed per pass. A 4-ton variable-speed system programmed at 400 CFM/ton will underperform on humidity compared to the same system programmed at 350 CFM/ton. A well-documented Reddit case shows a new Trane 4-ton variable-speed system delivering 64–74% indoor humidity after installation — not because the equipment was wrong, but because the default factory CFM settings had not been adjusted for a hot-humid climate. The fix: raising minimum compressor speed, switching blower delay to auto mode, setting minimum coil temperature to 36°F, and reducing airflow from 360 to 300 CFM/ton.^[9]

This is not a trivial commissioning step. It is the difference between a $15,000–$28,000 investment that solves your humidity problem and one that doesn't.

Variable-Speed Dehumidification Mode

Most premium variable-speed systems include a dedicated dehumidification mode that can be triggered by a humidity setpoint rather than a temperature setpoint. In this mode, the thermostat reads indoor RH and if it exceeds the setpoint — say, 50% — the system activates the compressor at low speed even if the indoor temperature is already satisfied. The blower slows down further to maximize coil contact time. The system runs as a dehumidifier with cooling as a side effect.^[1][5]

This mode is the reason that correctly installed and commissioned variable-speed systems in DFW can maintain 47–52% indoor RH during May and September — the shoulder seasons when a single-stage system has no answer. Modern communicating thermostats from Trane, Carrier, Mitsubishi, and Amana's ComfortBridge platform all support this configuration.^[10][5]

Truficient's Variable-Speed Lineup in DFW Context

Truficient's product catalog reflects a specific philosophy about this market: stop selling single-stage equipment that will fail DFW homeowners on humidity, and position inverter-based systems as the baseline for any home serious about comfort. The Mitsubishi SVZ-KP36NA paired with the SUZ-KA36NA2 heat pump is Truficient's flagship ducted inverter solution — featuring an INVERTER-driven compressor, high-efficiency ECM motor, and selectable external static pressure for custom airflow optimization across DFW's wide range of duct configurations. The Amana AVXC20 variable-speed platform offers up to 24.5 SEER2 with ComfortBridge technology that continuously monitors and adjusts system performance. The Amana ASZC18 dual-stage platform provides an entry to multi-stage operation for budget-constrained replacements that still need improvement over single-stage.^{[11][12][13][14]}

The non-negotiable for DFW: Any variable-speed installation must be: 1. Properly sized via Manual J (not "one ton bigger for safety") 2. Matched with a communicating variable-speed air handler — not a fixed-speed unit 3. Commissioned at 300–375 CFM/ton for humid-climate operation 4. Configured with a dehumidification setpoint on a communicating thermostat

Without all four, the variable-speed system is a more expensive single-stage system with good marketing.

Tool #2: Energy Recovery Ventilators (ERVs)

What an ERV Actually Does — and Doesn't Do

The single most important clarification in this entire guide: an ERV is a ventilation device, not a dehumidifier. Confusing the two leads to the ERV-turned-swamp-cooler failures that appear in Reddit's r/buildingscience regularly.^[15][16][17]

An ERV's job is to exchange stale indoor air for fresh outdoor air while recovering a portion of the energy (both heat and moisture) from the exhausted air. It does this through a heat-exchange core: indoor exhaust air and outdoor supply air pass on either side of a membrane. Heat and moisture transfer across the membrane from whichever airstream has more of each to whichever has less.

In DFW summer conditions — indoor air at 75°F/50% RH and outdoor air at 95°F/75% RH — the ERV does two things simultaneously: 1. Transfers heat from hot incoming outdoor air to cooler indoor exhaust air (pre-cooling the fresh air) 2. Transfers moisture from humid incoming outdoor air to drier indoor exhaust air (pre-drying the fresh air)

A quality ERV with 65–70% Latent Recovery/Moisture Transfer efficiency will capture roughly two-thirds of the moisture differential between outdoor and indoor air before the fresh air enters the building. That is not dehumidification. It is load reduction — reducing how much work the AC must do to handle the fresh air you are required to bring in. The North Texas installer data puts this in real-world terms: field measurements show a 15–25% humidity reduction in incoming air during peak DFW summer conditions after ERV processing.^[15]

ERV vs. HRV: Always ERV in Texas

A Heat Recovery Ventilator (HRV) recovers only sensible heat, not moisture. In winter in a cold climate, this is appropriate because indoor air is drier than outdoor air. In DFW's summer climate, using an HRV means transferring heat without transferring any moisture from the incoming humid outdoor air to the drier indoor exhaust — making your AC fight a moisture battle with no pre-drying assist. Every DFW installation requires an ERV, never an HRV.^[15]

This is a simple rule that is violated regularly by installers who either don't know the difference or have HRV stock to move.

Sizing for North Texas

Standard ERV sizing tables are built for mild climates. For North Texas specifically, the extreme summer humidity load argues for sizing 10–15% above the standard calculation. A 2,000 square foot DFW home should look at ERVs in the 120–150 CFM range. Commonly specified residential ERV platforms for the Texas market:^[15]

• Panasonic Intelli-Balance 100: 100 CFM, balanced ventilation, suitable for homes up to approximately 1,800 sq ft
• Broan AI Series 110: 110 CFM, AI-managed ventilation rate adjustment
• Fantech SH 704: 104 CFM, robust build for humid-climate applications

These are equipment-only costs. Installation adds meaningful labor given duct routing requirements.

How to Kill an ERV's Performance: 11 Ways Installers Get It Wrong

Energy Vanguard's comprehensive analysis of ERV installation failures is required reading for any contractor in the humid South. The most common mistakes in DFW installations:^[18]

1. Installing the ERV in unconditioned attic space — the exchange core cannot function if the duct runs to it are losing heat to a 140°F attic. The ERV must be in conditioned space, period^[18]
2. Using dryer vent duct for ERV connections — restricted airflow, improper materials, fails code
3. No insulation on outdoor air ducts — condensation risk on cold winter mornings destroys the unit over time^[18]
4. Using flex duct without proper support — restricted airflow reduces fresh air delivery below code minimums
5. No humidistat control — running an ERV on a timer means it runs at full speed on a 78°F dew point night, dumping moisture into a tight home that the AC cannot remove fast enough^[19]
6. Incorrect balancing — supply and exhaust airflows must be balanced; an unbalanced ERV pressurizes or depressurizes the building, defeating the purpose of controlled ventilation
7. Connecting to the return plenum only — ERV fresh air should be distributed to multiple points in the home, not dumped into the return where it mixes with recirculated air before conditioning

The humidistat control point deserves special emphasis. Carrier's ERV installation manual is explicit: the humidistat "senses humidity not temperature. It must be located in an area where it will continually monitor fresh air". Setting a maximum humidity limit prevents the ERV from operating when outdoor conditions are so humid that any air exchange makes the indoor problem worse. For DFW, a conservative maximum operating dew point setting of 60–65°F is appropriate.^[19]

The Critical Limitation: ERVs Cannot Remove Existing Indoor Moisture

An ERV reduces the moisture brought in through ventilation. It cannot remove moisture already in the building from internal sources — cooking, showers, respiration, concrete slab off-gassing, or infiltration through the envelope. In a 1970s Garland home with an 80°F dew point outside, even a perfectly installed ERV will be overwhelmed. It pre-treats fresh air; it does not dehumidify the space.

Tool #3: Whole-House Dedicated Dehumidifiers

The Case for Standalone Dehumidification

The building science community has converged on a simple maxim for hot-humid climates: HVAC+D — HVAC plus Dehumidifier. The "+D" is not an upgrade. It is the completion of the system. In a climate where the AC cannot run continuously (shoulder seasons, overnight, mild spring days), the dehumidifier is the only device doing active moisture removal. It operates independently of the cooling system, responding to humidity rather than temperature.^[20]

A properly installed whole-house dehumidifier integrated into the ductwork can remove 65–130 pints of water per day from the indoor air, maintaining target RH in the 45–50% range regardless of whether the AC is running. On a May morning in Frisco when the outdoor temperature is 72°F and the outdoor dew point is 67°F — exactly when mold-growth conditions are ripening in a tight new construction home with a single-stage AC that hasn't turned on in 18 hours — the dehumidifier is the only line of defense.^[21]

How a Ducted Dehumidifier Works

A whole-house ducted dehumidifier operates on the same refrigeration principle as an air conditioner, but with a critical difference: it returns all of the heat it removes from the air back into the conditioned space rather than rejecting it outdoors. The process:

1. Warm, humid room air is pulled across a cold evaporator coil
2. Moisture condenses on the coil and drains away
3. The drier, cooled air then passes over the warm condenser coil, which reheats it to approximately room temperature
4. The drier, approximately same-temperature air is returned to the space

The energy cost is approximately 500–800 watts during operation, and the returned air is slightly warmer than room temperature — which adds a minor sensible load to the AC on hot days. On mild days when the AC is not running, this waste heat is inconsequential and the humidity benefit is essential.^[20]

Equipment Selection: The Brands That Matter in DFW

Three brands dominate the professional ducted whole-house dehumidifier market:

AprilAire is the most widely recognized and easiest to source for HVAC contractors. The AprilAire E070 (70 pints/day, covers up to 2,200 sq ft) is rated best overall by independent testing for its combination of quiet operation, effective performance, and HVAC contractor integration. The AprilAire E100C (100 pints/day, covers up to 5,500 sq ft) is the ENERGY STAR "Most Efficient" unit and the right choice for DFW homes over 2,500 sq ft or homes with significant moisture infiltration.^[22][21]

Santa Fe is the brand that professional HVAC installers and building scientists consistently recommend in forums for sheer reliability. The Santa Fe Ultra98 (98 pints/day) is favored for its build quality and the brand's track record on warranty support. HVAC professionals specifically note: "This is why I prefer Santa Fe; it ensures that the dehumidifier will function for at least 5 years, and even after the warranty period, they occasionally make exceptions for professional installations".^[23]

Lennox and Honeywell/Resideo offer dehumidifiers that integrate directly with their communicating thermostat platforms — useful when the system is being built from the ground up with a fully communicating HVAC system.

Sizing for DFW: Bigger Than You Think

Standard residential dehumidifier sizing guides are calibrated for normal climates. DFW's peak summer humidity loads — outdoor dew points of 70–75°F pushing moisture through building envelopes that are never truly tight — argue for sizing at the top of the range. Guidelines:

For commercial buildings, Santa Fe and AprilAire both offer commercial-grade units, and dedicated outdoor air systems (DOAS) — which Truficient installs under its DOAS fresh air systems offering — represent the premium solution for larger buildings.

The Shoulder Season Argument: Why Every DFW Home Needs One

The most compelling case for a dedicated whole-house dehumidifier in DFW is not peak summer — it is the shoulder season. Consider:

• Late April through early June: Outdoor temperatures of 70–85°F, dew points of 65–72°F. AC runs infrequently. Variable-speed system is helping, but building envelope is loading up with moisture every hour the AC is off.
• September and October: Heat breaks, but Gulf moisture lingers. Outdoor dew points of 68–73°F continue even as temperatures drop. AC runs less. Same moisture accumulation problem.
• Winter cold fronts: DFW gets periods of 40–55°F outdoor temps with 60°F+ dew points as warm, moist Gulf air masses clash with approaching cold fronts. The AC is completely off. Without a dehumidifier, indoor RH climbs into mold territory.

A whole-house dehumidifier running through these shoulder periods — maintaining target RH of 47–52% regardless of whether the AC is operating — is the insurance policy that prevents mold from establishing between summer cooling seasons.

Tool #4: DOAS — The Commercial and Premium Residential Standard

For larger commercial buildings, multi-family properties, and premium residential builds with high fresh air requirements, a Dedicated Outdoor Air System (DOAS) is the architecturally correct solution. ASHRAE's Handbook of HVAC Systems and Equipment defines DOAS as using "separate equipment to condition all of the outdoor air brought into a building for ventilation, and deliver it to each occupied space". The HVAC system serving the space handles temperature; the DOAS handles fresh air and dehumidification independently.^[24]

DOAS design for DFW's climate should target a supply air dew point of approximately 45°F — meaning the fresh air has been cooled far below the dewpoint of even the most humid DFW outdoor air before it enters the occupied space. This ensures that ventilation air actually assists the space's humidity control rather than fighting it.^[25][26]

Truficient's DOAS capabilities cover both commercial and applicable residential applications. For restaurants, medical offices, high-occupancy retail, and any building where code ventilation rates are substantial, DOAS is not a luxury — it is the only approach that actually solves both the ventilation and humidity problems simultaneously.^[27]

Putting It Together: The DFW Humidity System Design

Here is the honest framework, stripped of marketing language:

Scenario 1: Full Replacement — The Right Way

Situation: Replacing an HVAC system in any DFW home built before 2015, any era.

The system: - Variable-speed inverter system (condenser + communicating variable-speed air handler) sized by Manual J - Commissioned at 300–375 CFM/ton for humid-climate operation - Communicating thermostat with humidity setpoint and dehumidification mode active - Whole-house ducted dehumidifier for shoulder-season coverage - ERV for code-required fresh air (2021 IECC compliant homes) with humidistat-controlled operation, maximum operating dew point set to 62°F

What you get: Indoor RH maintained at 47–52% year-round. Mold-growth conditions eliminated. Energy bills 25–40% lower than the single-stage system replaced. Lifespan of 18–22 years versus 12–15 for single-stage.^[4][3]

Truficient-grade installed investment range: $17,000–$35,000+ depending on home size, duct work condition, and product tier selected. This is the comprehensive solution.

Scenario 2: Existing Variable-Speed System + Add-On

Situation: Variable-speed system already installed but not solving shoulder-season humidity.

The fix: - Recommission the existing system — verify and adjust CFM/ton settings to 300–375 - Verify dehumidification mode is activated on the thermostat - Add a whole-house ducted dehumidifier sized for the home - Verify drain path, electrical, and integration with existing return plenum

Truficient-grade installed investment range: $4,000–$7,000+ for the dehumidifier + commissioning.

Scenario 3: Existing Single-Stage, Cannot Replace Yet

Situation: Single-stage system is relatively new, budget constraints prevent full replacement.

The immediate fix: - Whole-house ducted dehumidifier installed into existing return plenum - Confirm existing system is not oversized (Manual J check) - Seal ductwork if accessible — reduce moisture infiltration pathway through leaky attic ducts

What to expect: Significant improvement in shoulder-season humidity. Peak summer humidity still imperfect due to single-stage AC limitations, but dehumidifier prevents the worst mold conditions. This is a bridge solution, not the destination.

Truficient-grade installed investment range: $4,000–$7,000+.

Scenario 4: New Construction — Non-Negotiable Specs

Situation: Working with a builder on a new DFW home.

The system every new DFW home should have: - Variable-speed inverter system, Manual J sized, commissioned at 300–375 CFM/ton - ERV (not HRV) with humidistat control, 10–15% oversized for North Texas summer loads - Whole-house dehumidifier — the 2021 IECC's ventilation mandate makes this not optional - Ductwork within conditioned envelope wherever possible (spray foam attic) - Communicating thermostat tracking both temperature and humidity

Truficient-grade installed investment range: Add $8,000–$14,000+ to base HVAC system cost for the full humidity package.

The Honest Comparison: What Each Tool Does

The Question Truficient Asks on Every Humidity Job

When a DFW homeowner calls about humidity problems, the diagnostic conversation starts with five questions:

1. What is your indoor humidity reading right now, and what time of year is it? (Peak summer vs. shoulder season vs. shoulder season with AC not running are three different problems)
2. What is your current equipment — single-stage, two-stage, or variable-speed? And how old is it?
3. Has your HVAC system been replaced without a Manual J load calculation? (Oversizing is the most common root cause)
4. Does your home have mechanical ventilation — an ERV, HRV, or exhaust fan running continuously? (The 2021 IECC ventilation mandate is generating humidity problems in new homes)
5. What is the building era and foundation type? (Pre-1960 pier-and-beam has a different solution path than 2020 spray-foam slab)

The answers to those five questions determine whether the right prescription is a variable-speed replacement, a standalone dehumidifier add-on, an ERV commissioning adjustment, or the full HVAC+D+ERV system. There is no universal answer — but there is always a right answer for each specific building.

The Bottom Line for North Texas

The building science community has reached consensus on what humidity management in hot-humid climates requires, and it was put simply in a single Instagram post that went viral among Texas building professionals: "Build Air Tight & Add a Dehumidifier to your HVAC+D System! Fresh Air through an ERV too." The formula is HVAC plus Dehumidifier plus ERV. All three, working together, with each doing its specific job.^[20]

For DFW homes that already exist and cannot be rebuilt, the achievable version of that formula is: a properly commissioned variable-speed system doing its job on sensible cooling and in-season dehumidification, a whole-house dehumidifier covering shoulder seasons and nights, and an ERV handling fresh air ventilation without dumping more moisture into a building already fighting the new North Texas humidity normal.

That system — designed, installed, and commissioned correctly — is what "the professional's edge" actually looks like when applied to the specific, worsening humidity challenge that every DFW home and commercial building now faces.

Part 4 of this series: "ASHRAE Standards and Texas Mechanical Code: What the Rules Require for Indoor Humidity in DFW" — the regulatory and professional standards framework that backs everything in this series, and what building owners and contractors need to know about compliance and liability.

Sources include Kone and Fumo (2020) dehumidification performance study (UT Tyler), Carrier Greenspeed technical data, Trane variable-speed system documentation, Energy Vanguard ERV installation guide, Panasonic Intelli-Balance and Fantech product specifications, AprilAire and Santa Fe dehumidifier performance data, ASHRAE Handbook Chapter 51 (DOAS), ASHRAE/PSU DOAS design publications, r/hvacadvice and r/buildingscience community case studies, North Texas HVAC installer field data, 2021 IECC residential requirements, and Truficient Energy Solutions product and service documentation.

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References

1. Variable Speed AC Might Reveal Your Humidity Problem - Variable-speed AC's do such a good job removing humidity from your home that you might finally reali...
2. Is Your HVAC System Too Big? How Oversized Units Can ... - Oversized HVAC systems can short cycle, leaving humidity behind in your home. Learn the signs, why i...
3. Variable Speed AC vs Single Stage: Worth It? (2026) - Jupitair HVAC - More run time at lower capacity means better humidity ... Variable speed systems run longer at lower...
4. Heat Pump - Single Stage vs Variable Speed - MEP Academy - Variable Speed: Maintains more consistent indoor temperatures and better dehumidification by running...
5. Variable-Speed HVAC vs Single-Stage HVAC System - Trane® - Single-stage HVAC systems are at the low end as far as upfront cost and energy efficiency, and cost ...
6. Single-stage versus variable-speed air conditioning ... - After an exciting summer packed with three blower motor failures in three 6-year-old Trane single-sp...
7. [[PDF] Dehumidification performance of a variable speed heat pump and a ...](https://scholarworks.uttyler.edu/cgi/viewcontent.cgi?article=1023&context=me_fac) - This study compared the dehumidification performance of a residential air conditioning system workin...
8. Compare Single, Two-Stage & Variable-Speed AC Systems - Carrier - They also provide premium humidity control, removing up to 400% more moisture than standard systems ...
9. High humidity with new Trane 4ton variable speed - Reddit - I left town shortly after install and when I came home in July I noticed interior humidity levels ra...
10. Experience the Difference of a Residential Smart & Communicating HVAC System - Decoding the Comfort Code: Understanding Residential Communicating HVAC SystemsIn today's world, whe...
11. Ready for Sustainable Comfort? Meet the Mitsubishi SVZ-KP36NA - **Product Spotlight: Mitsubishi SVZ-KP36NA Multi-Position Air Handler System – A Breath of Fresh Air...
12. Amana – ASZC180601 / AVPTC61D14 | 5.0 Ton | 18 SEER | Dual Stage | Heat Pump - Outdoor Unit - Amana ASZC180601 - 56,000 BTUH Heat PumpWhen your new heat pump is paired with an Ama...
13. Amana – ASZC180481 / AVPTC61D14 | 4.0 Ton | 18 SEER | Dual Stage | Heat Pump - Outdoor Unit - Amana ASZC180481 - 49,000 BTUH Heat PumpWhen your new heat pump is paired with an Ama...
14. Amana – AVXC200361 / AMVC80805CN | 3.0 Ton | 20 SEER | Multi Stage | Gas - # Amana – AVXC200361 / AMVC80805CN | 3.0 Ton | 20 SEER | Multi Stage | Gas Starting at $19,826.00 ...
15. Energy Recovery Ventilation (ERV) Guide - Jupitair HVAC - ERVs transfer both heat AND moisture—critical for our humid summers when HRVs (heat-only) would make...
16. Will an ERV Dehumidify Your Home? - No. An ERV will not dehumidify your home. An ERV removes humidity from the incoming air stream, but ...
17. I had an ERV installed and now it's a swamp indoors ... - Reddit - An ERV can reduce indoor humidity levels when it exchanges heat and moisture between the supply and ...
18. 11 Ways to Screw Up an ERV Installation - Energy Vanguard - Tips for a good ERV installation · Install the ERV in conditioned space. · Both ducts to the outdoor...
19. [[PDF] Installation, Start--up, and Operating Instructions - Carrier](https://www.shareddocs.com/hvac/docs/1009/Public/0A/ERV-4SI.pdf) - The ERV will not operate without it. This control senses humidity not temperature. It must be locate...
20. Hot/Humid Climate: Two things we need to keep top of mind when ... - Build Air Tight & Add a Dehumidifier to your HVAC+D System! Fresh Air through an ERV too. Thought to...
21. Best Whole House Dehumidifier in 2025: Top 11 Ducted Picks - The AprilAire E070 typically lands in the mid‑range for ducted dehumidifiers given its capacity and ...
22. The Best Whole-House Dehumidifiers of 2026 - Bob Vila - We spent a month testing five whole-house dehumidifiers, and the AprilAire E070 won best overall, la...
23. AprilAire 130W vs Santa Fe 155 : r/hvacadvice - Reddit - I need a whole home ducted dehumidifier, narrowed it down to these two. I like the Santa Fe because ...
24. CHAPTER 51 DEDICATED OUTDOOR AIR SYSTEMS - CHAPTER 51 DEDICATED OUTDOOR AIR SYSTEMS Dedicated outdoor air systems (DOASs) use separate Dequipme...
25. 34
26. Doas Design - ASHRAE has published a paper on the design of dedicated Outdoor Air systems. Many engineers have dis...
27. DOAS Fresh Air Systems - If you’re looking for a way to improve the indoor air quality of your home or office, you might want...