Comments

Related Tech Tips

The HVAC/R Island of Misfit Toys
It’s that time of year again. The tree has been decorated, cookies have been baked, festive family photos with my 10 kids have been sent out to friends, and we’ve had no shortage of service calls about “smoking” heat pumps. (Don’t worry, that’s normal.) You know how much I enjoy Christmas movies by now, and […]
Read more
Crankcase Heaters and Single-Pole Contactors
We keep two-pole, 40-amp 24v coil contactors on all of our vans. They are versatile and reliable, and you can replace most residential A/C contactors with them. There are a few things to watch for, though, especially when you have a crankcase heater. Many brands power the crankcase heater constantly and shut it on and […]
Read more
Is R22 legal to use?
I've recently seen heated debates in different HVAC groups about whether it is okay to recharge a residential HVAC system with R22 without locating and repairing the leaks. I've had residential customers call me and complain about other companies telling them they must replace their system because it leaks. They've also stated that it is […]
Read more
loading

To continue you need to agree to our terms.

The HVAC School site, podcast and daily tech tips
Made possible by Generous support from