HOME VENTILATION

HRV vs ERV: Which Fresh-Air System Is Right for an Upstate Home?

Both bring fresh outdoor air in and push stale indoor air out while recovering energy from the exhaust stream. The difference is moisture — and in Greenville’s climate, moisture is the whole question.

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THE DIFFERENCE

Heat Recovery vs Energy Recovery

A Heat Recovery Ventilator (HRV) transfers heat between the incoming and outgoing air streams, but not moisture. It was designed for cold, dry climates where the goal is to keep winter heat inside and let indoor humidity escape.

An Energy Recovery Ventilator (ERV) transfers heat and moisture. In summer it rejects most of the humidity in the incoming outdoor air before it reaches the living space; in winter it keeps some indoor moisture from being exhausted. For a climate that runs humid nine months of the year, that’s the behavior you want.

OUR RECOMMENDATION

For Most Greenville-Area Homes: ERV

An HRV in the Upstate pulls 70° dew point air straight into a conditioned house all summer, adding load to the cooling system and leaving the home stickier than before. An ERV delivers the same fresh air with a fraction of the moisture. That’s why nearly every whole-home ventilation system I install here is an ERV.

See ERV Installation →

WHEN AN HRV STILL FITS

Specific Cases Where an HRV Makes Sense

Homes with a persistent indoor moisture source (indoor pool, large aquariums, heavy plant rooms) where exhausting humidity is the goal
Situations where a builder’s spec or an existing duct layout calls for an HRV and swapping isn’t practical
Mountain-foothill homes with a genuinely drier microclimate, evaluated case by case

I’ll tell you which one your home actually needs rather than install what’s easiest.

Explore Related Ventilation Services

Home Ventilation | ERV Installation | Kitchen Range Hood Venting | Bathroom Exhaust Fan Venting

TRUSTED BY HOMEOWNERS

What Homeowners Are Saying

We take pride in delivering clean installations, thoughtful system design, and long-term performance. Here’s what homeowners have to say about working with VisionAiry Heating & Cooling.

VisionAiry Heating & Cooling Inc

5.0

Based on 41 reviews

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Scott Hampton

7 months ago

We were very impressed with this company. We had an issue with our bathroom venting through the attic to the roof. David came out, assessed the problem, and provided us with reasonable quotes for various options to correct the issue. The work was done efficiently and we were even provided with before/after videos for verification and future reference. We would definitely recommend this company.

Doug Wisser

8 months ago

David installed our new fully electric multi-zone heat pump system, mixed ducted/ductless to replace old AC & gas furnace. The work was thorough, detailed, and neat. David went over and above to keep us comfortable, resolved some historic oddities in our HVAC system, and provided support with app controls. Communication and admin support regarding scheduling, rebates, financing, permitting etc. was all very clear & handled quickly. All around quality experience, good folks!

Nicole Heppelmann

11 months ago

I worked with David at VisionAiry Heating and Cooling for the installation of a new heat pump and furnace. The first thing that impressed me about him was the lack of pressure and his high level of honesty. He didn’t try to “sell me” on anything - he was honest about the state of my heating system and answered all of my questions patiently. This all made me feel I could trust him. As we worked toward a plan, he was willing to talk me through things over and over, and was excellent at communicating. When it came time for the install, everything went well! He installed the furnace one day and the heat pump next - they look and work great! The team was thorough and the system works great. Super happy with this team and would highly recommend!

Jane Duden

11 months ago

David Daher was the ultimate skilled and respectful professional, and I could not be more pleased with how he assessed my situation, carried it out promptly and dependably, and always superbly cleaned up. He's an expert installer and knows his products. He's patient and thorough with questions, and always so very pleasant. I have every confidence and trust in VisionAiry, and look forward to many comfortable years with my new furnace and heat pump. You will never regret choosing this top-notch company!

Julianna Baalson

1 year ago

David was punctual and took the time to explain what was needed, how he would do it and was such a joy to work with! He had to make multiple trips out to my place as we uncovered other electrical things that needed to be fixed first and he was always kind and brought a good energy to the situation when I was feeling stressed. I've told all my Minneapolis friends and neighbors that if they need a bathroom fan or stove vent properly vented that they HAVE to work with David. I'll continue to sing his praises haha 🙂

Matt Hill

3 years ago

With boiler heating and no duct work in our house we have been looking to get a mini split system installed to provide some AC. We had it quoted from numerous companies big and small but the price always was too steep. After contacting David and having many back and forth emails as well as him visiting our house the final quote was the most competitive. It is one thing to know what you are doing but it is another to actually care about what you are doing and David has both. From first contact to the finished job David was forthright and honest on everything but also provided a high level of competency and quality for doing the job. I could not be happier with the whole process from beginning to end and highly endorse him for any work he does.

SCHEDULE A CONSULTATION

Thinking About Improving Ventilation in Your Home?

Not sure which one your home needs? Tell me about the house and I’ll give you a straight answer.

HRV or ERV, evaluated honestly
Designed with the heat pump system
Owner-installed and commissioned

Start Your Comfort Consultation

Tell us about your home and we’ll help you determine whether an HRV system or another ventilation solution is the best fit for your space.

Request Ventilation Assessment

Prefer to call? 864-864-HVAC (4822)

Serving the Upstate

Serving Homeowners Across Greenville & Spartanburg Counties

VisionAiry Heating & Cooling designs and installs Mitsubishi ductless mini-split and heat pump systems for homeowners throughout Greer, Greenville, Spartanburg, and the surrounding Upstate.

Greer • Greenville • Taylors • Simpsonville • Five Forks • Mauldin • Fountain Inn • Travelers Rest • Spartanburg • Boiling Springs • Duncan • Lyman • Wellford • Woodruff • and nearby communities.