Expert HVAC Service and More in Thornbury Township, PA
DiBiase Heating and Cooling Company provides a full range of services to keep your home comfortable and efficient year-round in Thornbury Township, PA. Whether you need HVAC repair, installation, or maintenance, we’ve got you covered. Our team also specializes in improving indoor air quality with air purifiers, humidifiers, and ductwork services. Looking for water heater solutions? We offer repairs and replacements for both tank and tankless systems. Additionally, our energy services, including air sealing, insulation, and energy audits, help homeowners save on utility costs while maximizing comfort. Whatever your home’s needs, DiBiase Heating and Cooling Company is here to deliver expert service.
Founded in 2008, DiBiase Heating and Cooling Company is a family-owned and operated company that’s committed to delivering honest, reliable service. We take pride in our expertise, offering certified technicians who provide top-quality HVAC, plumbing, and energy services. What sets us apart is our focus on process and integrity—we do the job right the first time, ensuring your home is always in good hands. Ready to experience the DiBiase difference? Call 610-873-1244 or contact us online today to schedule your service!
Recent Jobs and Reviews in Thornbury Township, PA
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- West Bradford Township, PA (32)
- West Brandywine Township, PA (7)
- West Chester, PA (118)
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Job Locations and Reviews

Installed new Goodman furnace and indoor coil in a new auxiliary drain pan. Reconnected return and supply ducts. Adapted to gas from gas valve to the unit, installed a new ez trap and wet switch, insulated drain line. Installed a motor surge protector. Installed new Goodman air conditioner on a new concrete pad, installed mars disconnect with a built in surge protector. Flushed refrigerant lines, adapted to refrigerant lines and brazed them in, pressure tested to 350psi and leaked checked all joints before evacuating the system down to 500 microns. Added 1 lbs 8oz. Tested all functions of the equipment, working good at time of completion.

7/24/25 Tan Performed ac maintenance on 8 year old system installed by another contractor. Gas furnace was recently replaced by us. Checked temp splits, airflow, and amp draw on blower motor. Checked filter and it was still good. Found .2 static drop across filter which means it’s good. Flushed and tested condensate drain pan and line. It naturally drains into nearby sump pump. Found no evidence of oil in pan that typically suggests a leak. Indoor coil is in good condition. Uses txv metering device. System has flood protection and surge protection on indoor unit. Checked outdoor system and found it leveled. Outdoor disconnect is equipped with surge protection which helps the ecm condenser fan motor. Checked capacitor and contactor and while they’re original to age, they checked out. Checked amp draws on motors and they’re within manufacture specifications. Checked refrigerant levels and they were good. Washed outdoor coil using nearby hose. Informed Mike about his system and he’s sat

Estimate
We’ve had DiBiase service our units for years and they’re always prompt, friendly, progressional and fair priced. Our appt with Daniel today was great - I’d expect nothing less.

Arrived for the second floor attic system not cooling. On arrival I could see ice on the line set outside. I went inside turned the thermostat the fan on and cool to off. I didn’t take long to melt off. I threw my gauges on the outdoor unit found very low had 40° superheat and zero so cool. Customer has an estimate scheduled tomorrow at 3:30 PM. He’s looking to replace the furnace and AC system is 20 years old old R 22. I collected for my balance for today For diagnostic and an air filter.

Upon arrival, I found no error codes for water pump. When looking through fault history, I found several errors for water temperature. this is most likely due to low water pressure. Checked water pressure and found loop at zero PSI indicating a leak. Pressurized loop at 22 psi to increase flow rate. Checked refrigerant pressures and temperature. Checked temperature differential on water in and out. System is operating appropriately at this time. Homeowner will have to have well company look into leak.

Upon arrival I found system was operating appropriately. Checked refrigerant pressures and temperature differential across indoor. Checked all electrical connections and components. Installed Intermatic protector at homeowners request. System is operating appropriately at this time.

Installed surge protector for outdoor unit. In service panel. Tested system afterwards. Verified amps and compressor amps, . Checked refrigerant pressures in AC1 and AC2 modes. Temperature split 68-50=18° Perfect System operating well at this time. Karen paid for invoice today.

Completed AC tune up for 3.5 Ton Amana AC system Replaced Aprilaire 413 filter Indoor and outdoor coils in good condition Inspected wiring, controls, electric motors and components; left estimate for surge protector for outdoor equipment Measured temperature split and static pressure Inspected drains; cleared EZ trap, tested pump; added treatment tabs to drain pan. Checked integrity of compressor motor (mega ohm test) Assessed refrigerant charge checked pressures. AC system operating well at this time. Paid for invoice today. Filter replacement.

Performed AC tune up for 5 ton Bosch inverter heat pump system, Closed bypass damper at humidifier for summer. Replaced 20x25x4 filter provided by customer Inspected condition of both the indoor and outdoor coil Measured temperature split and static pressure Ensured drains were clear. Test condensate pump. Inspected wiring, controls, electric motors and components including fan speed. Monitored R410A refrigerant pressures and levels ok. Check input and output on outdoor inverter ok. During today’s visit noticed expansion tank has failed. Provided estimate to replace expansion tank and add pressure reducing valve.

Checked the AC side of the systems. Checked all the air filters and replaced if needed . I checked all electrical wiring and voltages. Checked the indoor coils and inspected the drain pans . The condensate drains on all units were water tested and cleared. Checked all the blower operations and amps. Inspected the outdoor unit coils and inspected the wiring connections and voltages for all units . Tested the pressures by using superheat and subcool methods and checked the amps for the compressor in the fan motors on all units . Checked the indoor cooling temps at the supplies and returns for both systems . Both AC units are working fine at this time of service .
Kurt was a pleasure. Great attitude nice disposition .Very thorough and explained all my questions. Thank You. I'll have him back anytime. He explained different options. Need to make appointment for new service.