A January quote can make heat recovery sound like the entire decision. A July quote can make humidity sound like the entire decision. You will own the system through both.
This guide fits homes with a meaningful heating season and a humid cooling season, such as many Mid-Atlantic and interior US locations. Northern homes with long freezes should also read the cold-winter guide.
Your shortlist starts with two seasons
Ask for an ERV comparison, then ask whether the home's winter moisture makes an HRV worth considering. DOE describes an ERV as transferring moisture as well as heat between air streams. The effect depends on the indoor and outdoor conditions; “energy recovery” does not mean the system controls every aspect of comfort. See DOE's system overview.
Rather than settling the question from a regional label, bring a seasonal account of your home.
Build a two-season brief
| In winter, write down… | In summer, write down… |
|---|---|
| Whether you run a humidifier | Whether you run a dehumidifier |
| Any persistent wet windows | When rooms feel clammy despite cooling |
| The number of sleepers in each room | Whether humidity rises during mild rainy weather |
| How you normally set doors and fans | Which rooms are least comfortable |
Add measurements where you have them. “We have not measured that yet” is a useful answer too.
Shop for a control plan you can understand
Ask the installer to demonstrate a normal night, a bathroom boost and a seasonal change. Which settings are automatic? Which require you to do something? Where is the control, and what happens after an override ends?
If a proposal includes a bypass feature, ask what it bypasses and when it operates. Do not assume “summer bypass” means cooling or dehumidification. Ask for the exact model's manual and a description in ordinary language.
Four quote questions that expose missing scope
- What is the design airflow, and where does it go? Ask for sleeping-room delivery and a measured commissioning report.
- What changes when the central blower is off? If the design shares heating or cooling ducts, ask how the air will be distributed.
- What handles humidity on mild days? Ask whether the load was assessed and whether additional control is needed.
- What is the annual maintenance routine? Ask for filter sizes, access, cleaning and an owner walkthrough.
DOE's existing-home guidance treats integration, distribution and humidity as part of system selection. HVI's consumer guide also emphasizes proper installation and maintenance.
Put a seasonal follow-up in the handover
Ask whether the installer will review settings after the first change of season. Keep the commissioning record, your settings and the first post-install bedroom check together. A summer installation deserves a winter follow-up; a winter installation deserves a summer one.
Before you request a quote
- Write a two-column list of winter and summer comfort or moisture problems.
- Ask for the reason behind the proposed core, using both seasons and your occupancy.
- Request a control walkthrough and a plan to recheck performance in the opposite season.