Whole-home air purifiers, media filters, humidifiers, dehumidifiers, and HRV/ERV ventilation — tuned for tight Minnesota homes that need fresh air without the heat loss.
Typical air quality pricing in the Twin Cities: $350–$2,800 installed. Written, flat-rate quote before any work begins.
— What's included
— Our process
— The detail
Twin Cities indoor air drops to 10–15% RH in January — dry sinuses, static shocks, cracked trim. A whole-home Aprilaire steam or bypass humidifier brings the house to a 35–40% setpoint without overshooting and condensing on cold window glass. We size to your blower CFM and water hardness so the unit doesn't scale out in two seasons.
A 4-inch or 5-inch media filter (MERV 11–13) lasts 6–12 months, captures pollen and pet dander, and doesn't choke the blower the way a high-MERV 1-inch filter does. For allergy-sensitive households we add a bypass HEPA or UV-C lamp on the coil.
New builds and tightly sealed retrofits need mechanical ventilation. A Heat Recovery Ventilator (HRV) brings in fresh outdoor air and recovers 70–85% of the heat from outgoing stale air — fresh air without the heating bill. ERVs add humidity recovery for summer.
— Where we work
— The procedure
Install procedure for a layered IAQ stack: high-MERV filter cabinet, whole-home humidifier, and UV-C or polarized-media purifier.
Tools
Supplies
We measure total external static pressure first. Adding a 5" MERV-13 cabinet to a system that's already starved for return air will choke the blower — we fix the return first.
The 1" filter slot is removed and a 5" media cabinet is sheet-metaled in at the return drop. Door faces a serviceable side so you can change the filter without crawling.
Humidifier mounts on the warm-air supply with a bypass duct to the return. ¼" water line is run from a saddle valve on cold copper to the solenoid.
Humidistat is set on the return duct (or integrated into a smart thermostat) and an outdoor temperature sensor is added so target RH tapers down in deep cold to prevent window condensation.
UV-C lamp is mounted aimed at the evaporator coil to inhibit biological growth, or a polarized-media cell is wired into a 24V transformer downstream of the filter.
We log indoor RH, particulate count (PM2.5), and static pressure before/after. You get a one-page baseline so future changes are measurable.
Media filter every 6–12 months, humidifier pad annually, UV lamp every 24 months. Reminders go into our system and you get a postcard.
Talk to a real dispatcher 7 days a week. Same-day appointments when the schedule allows.