When Edina windows & sealing change the HRV vs ERV call
Character homes and prestige rehabs around Edina often gain comfort and lose accidental ventilation on the same invoice. This page is the envelope story — not a generic twin-card comparison.
Before: leaky charm did invisible work
Before upgrades
Original sash, porous attic bypasses, and unsealed rim joists leaked. Winter air change was accidental but real. Indoor RH rarely spiked enough to fog glass for long. Odors cleared on windy days without anyone naming "ventilation."
What people liked
Fresh feel, lower condensation drama, and furnaces that seemed to "keep up" because infiltration diluted moisture loads.
After: the invoice that trapped weather inside
Typical Edina projects
Triple-pane or high-spec vinyl/wood windows, attic dense-pack or spray, air-sealed can lights, weatherstripped doors, sometimes insulated sheathing on a deeper rehab.
New indoor reality
Either January glass weeps and baths stay muggy (HRV lane) or the house goes bone-dry because almost no outdoor moisture enters (ERV lane).
The core decision is really a story about what your last contractor removed: accidental air change. We install controlled recovery to put a smarter version back.
Which after-state are you in?
- Fog, musty lower level, peeling bath paint → quote HRV
- Static, dry sinuses, furniture checking → quote ERV
- Just finished sealing, not sure yet → run a $15 hygrometer for two cold weeks, then call
HRV after moisture shows up
Recovers heat while rejecting indoor humidity. Fits sealed Edina houses that started weeping glass post-windows.
ERV after the desert arrives
Recovers heat and returns some moisture. Fits deep rehabs and tight customs that overshot dryness.
Prestige expectations without product-page theater
Edina jobs often care about quiet cabinets, discreet hoods, and finishes that survive stable RH. That is still an install scope conversation — not a reason to shop equipment retail links. We quote the core mission from your before/after symptoms, then hang and balance the matching cabinet under license.
How we quote without guessing
Tell us pre- vs post-project symptoms, neighborhood cue (Country Club side vs denser south-central pockets), and whether woodwork care is a priority. You get one core recommendation and licensed install scope — never a link to buy the box yourself.
Edina envelope FAQ
We only replaced windows — attic still original. Still a problem?
Windows alone often cut enough infiltration to show fog. Attic sealing later can amplify it. Track symptoms after each project.
Country Club vs Southdale-adjacent stock — same story?
Character and prestige envelopes both seal aggressively during rehabs. Symptom lane still decides core type.
After sealing our Edina home feels like a desert. ERV automatic?
Usually yes for continuous outdoor air. We confirm with RH before locking the quote.
Can recovery ventilation protect woodwork and pianos?
Stable RH helps finishes. ERV supports moisture retention; HRV prioritizes dumping excess humidity — match to your complaint.
Do you work around historic exterior constraints?
We plan discreet hoods and interior routing so curb appeal stays intact.
Share your before/after
What changed (windows, attic, full rehab) and what the house does now in January.
Other west-metro ventilation pages