Three Valleys Heating & Air Conditioning - Philadelphia's Top-Rated HVAC Services

That's often a clogged condensate drain, a very common issue here due to our humidity. First, turn off your AC to prevent water damage. You can try clearing the visible part of the drain line with a wet/dry vacuum, but if the clog persists, it's best to call us. Our technicians can thoroughly clear the line and apply an algaecide treatment to help prevent future clogs, protecting your system and your home.

While replacing a thermostat seems simple, improper installation can lead to wiring issues or system damage. First, check the basics: ensure it's set to 'cool' or 'heat,' replace the batteries if it's digital, and make sure the circuit breaker hasn't tripped. If it's still malfunctioning, our experts can diagnose if it's the thermostat itself, a wiring problem, or a signal issue with your HVAC unit, ensuring a correct and safe fix.

Proactive maintenance is key for our historic homes. We recommend a professional tune-up twice a year—spring for AC and fall for heating. This allows us to catch small issues like early drain clogs or loose thermostat wiring before they become big problems. Also, regularly changing your air filter (every 1-3 months) is one of the easiest and most effective things you can do to keep your system running efficiently and prevent strain.