Helpful Answers
Frequently Asked HVAC Questions
Find clear answers about heating and air-conditioning service, preventive maintenance, filters, indoor air quality, equipment replacement, scheduling and emergency situations.
Maintenance & Indoor Air Quality
Routine maintenance helps equipment operate efficiently, reduces avoidable breakdowns, supports safer operation and can extend system life. It also gives a technician an opportunity to identify worn or failing components before they become larger repairs.
Most standard one-to-three-inch filters should be inspected monthly and replaced about every one to three months. Homes with pets, smokers, allergies, renovation dust or heavy system use may need more frequent replacement.
Regular cleaning, correct filtration, humidity control, proper ventilation and professional duct or indoor-air-quality services can reduce dust, allergens and other airborne contaminants. The best solution depends on the home and the existing HVAC system.
Yes. Maintenance agreements are designed to provide scheduled preventive care, priority service and cost-effective support that helps keep heating and cooling equipment operating at peak performance.
Heating, Cooling & Equipment
Confirm that the thermostat is set to heat and above the current room temperature. Check the circuit breaker, emergency switch and air filter. If the system still does not start, or if you are unsure about any step, turn the system off and contact a qualified HVAC technician.
Check that the thermostat is set to cool, the filter is clean and supply and return vents are open. Also look for ice on the indoor coil or outdoor lines. A frozen system should be turned off and professionally diagnosed rather than repeatedly restarted.
Services United services and repairs major makes and models of residential HVAC and home-comfort equipment, including furnaces, heat pumps, boilers, central air-conditioning systems, rooftop units and water heaters.
The right choice depends on equipment age, repair cost, efficiency, comfort problems, reliability and expected future expenses. A technician can evaluate the system and explain practical repair and replacement options before you decide.
Scheduling, Service & Financing
Yes. Services United offers 24/7 emergency assistance for urgent no-heat, no-cooling and other serious HVAC problems. Call 610-686-6119 for the fastest response.
Same-day, next-day and emergency appointments may be available depending on call volume, technician availability and the type of service needed. Call the office to discuss the earliest available appointment.
The technician will diagnose the problem, explain the findings and discuss the recommended work. Ask any questions you have before approving a repair, maintenance service or equipment replacement.
Financing may be available to qualified customers for eligible HVAC installations. Services United can also help identify current utility rebates, manufacturer promotions and other available savings when applicable.
Safety & Basic Troubleshooting
Leave the building immediately. Do not operate switches, phones, appliances, matches or anything that could create a spark. From a safe location, contact the gas utility or emergency services and do not re-enter until qualified professionals say it is safe.
Turn cooling off and allow the system to thaw. Check the filter and make sure vents are open, but do not chip ice from the equipment or continue operating a frozen system. Contact a technician because low airflow, refrigerant issues or other faults may be involved.
Yes. Grinding, banging, electrical or burning odors, repeated clicking and sudden changes in normal operation can indicate a developing problem. Turn the equipment off if operation appears unsafe and schedule an inspection.
Yes. Available services include gas and electric water-heater repair or replacement, leaky-pipe repair, drain cleaning, frozen-pipe repair and related light plumbing work. Contact the office to confirm the service needed.
Still Have a Question or Need HVAC Service?
Our local team is ready to help with same-day, next-day and 24/7 emergency service throughout Bethlehem and the Lehigh Valley.