HVAC and Insulation From a Working Tech
Dana Sorensen · July 6, 2026
Scroll through enough HVAC forums and you’ll find two camps giving opposite advice. One says grab the densest, highest-MERV filter on the shelf because more filtration always wins. The other insists anything past MERV 8 will choke your furnace and should be avoided entirely. Neither absolute is correct, but if I had to pick which … Read more
Dana Sorensen · June 29, 2026
Here’s the myth I spent years reinforcing without meaning to: that a portable air purifier is basically a placebo if your HVAC system already has decent filtration. I told clients this constantly. Then my own sinuses forced me to check my own advice against reality. Last spring I ran a controlled 30-day trial in my … Read more
Dana Sorensen · June 19, 2026
A mismatched air filter can quietly wreck a perfectly healthy furnace — and that’s exactly what greeted me last month at a house in Edina. The homeowner was fed up: his electric bill had jumped 18% over the winter, the upstairs bedroom stayed stubbornly cold, and the equipment seemed to never shut off. A quick … Read more