Every Trane is tested to withstand the harshest conditions nature or their engineers can throw at it – like freezing conditions in their System Extreme Environmental Test (SEET) lab or five-inches of water an hour in their Climate Chamber. That’s how they get heating and cooling systems you can count on to run through anything. And when it’s time for a tune-up, Greenwood Heating, who is a Trane Comfort Specialist™ is always at your service right when you need us. It’s that kind of reliability that’s earned Trane and Greenwood the positions of America’s Most Trusted HVAC System and Washington’s Oldest and Most Trusted Contractor, respectively.