Harrison W.
I recently had Mainstream inspect my furnace and A/C and their service was nothing short of exceptional. Zach was not only punctual but also incredibly thorough in their inspection process. He took his time to ensure everything was checked and double-checked, leaving no stone unturned.
Netha M.
Shannon B.
Brandon E.
Joe was phenomenal. He not only did a thorough inspection of our furnace, he took the time to explain what he was seeing so that I could feel more confident in the overall status of my HVAC system. I will absolutely be sticking with Mainstream .
Laurie R.
Parts for the furnace were way back ordered but Kenny was able to do something to keep our furnace running during all this time. I would recommend Mainstream above and beyond ANY other heating and air conditioning service!
Sheree G.
We tackle even the toughest drain clogs, restoring smooth drainage and preventing future issues.
Extend the life of your system and improve efficiency with our comprehensive maintenance services.
Like most people, you might not think much about your plumbing – until something happens.
Your drains are nearly invisible, but far from invincible. We’re here to help keep things flowing.
Our electricians will help get the lights turned on in thousands of Spokane area homes.
A heat pump works differently than traditional systems because it does not create heat—it moves it. That difference is what makes it one of the most energy efficient HVAC systems available today.
In the winter, it pulls heat from the outdoor air and brings it inside. In the summer, it reverses that process, removing heat from your home and pushing it outside. The result is one system that handles both heating and cooling without switching between separate units.
Because a heat pump runs more steadily and adjusts to changing temperatures, many homeowners notice more consistent comfort from room to room. Instead of sharp temperature swings, the system works to maintain a stable environment throughout the day.
Modern systems, especially high efficiency heat pump models, are designed to perform in a wide range of conditions. When paired with proper installation and airflow, they can keep up with seasonal changes while using less energy than older systems.
A heat pump is only as effective as the way it is installed. System sizing, ductwork, and airflow all play a role in how well it performs. If any of those are off, even a high efficiency system can struggle to keep your home comfortable.
That is why air source heat pump installation should always be based on the home itself, not just the equipment. A properly designed system will run more efficiently, last longer, and avoid many of the common performance issues homeowners experience.
If a heat pump is no longer keeping up, runs constantly, or causes uneven temperatures, it may be dealing with airflow restrictions, refrigerant issues, or general wear over time. These problems are not always obvious at first but tend to get worse if left unaddressed.
Having the system checked early can help prevent larger repairs and keep it operating the way it was designed to.