Heat Pump Repair Near Holliston, MA

$99 Heat Pump Repair Diagnostic

$89 Heat Pump Repair Diagnostic

$79 Heat Pump Repair Diagnostic

$99
Regular Price
$99
$89
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Regular Price
$99
$79
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Noticing strange sounds, weak airflow, or rising energy bills? See the full list of hidden HVAC warning signs before it’s too late ↓

Heat Pump Repair Near Holliston, MA

(508) 443-6451
(508) 443-6452
(508) 443-6453
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Heat Pump Repair in Holliston — Honest, Upfront Pricing You Can Trust

Our licensed technicians bring deep experience, ongoing training, and the right tools to every job. We arrive prepared to diagnose and fix the problem quickly. In most cases, your Heat Pump Repair is resolved on the first visit.

Before any work begins, we explain all options and prices clearly, so you can decide with confidence. We service most equipment brands and models. Your comfort is our commitment, and every repair is backed by our satisfaction guarantee.

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SumZero Energy Systems is Here for All of Your Heat Pump Repair Needs in Holliston!

  • Fully Stocked Trucks: Most repairs completed on the first visit
  • Friendly Professionals: Courteous, on-time, and respectful in your home
  • Fully Licensed & Insured: Work you can trust, start to finish
  • Same Day Service Available: Fast help when you need it most
  • 100% Satisfaction Guarantee: We stand behind our workmanship
  • Complimentary 2nd Opinions: Honest guidance before you decide

Need reliable Heat Pump Repair in Holliston, MA? We’re local, responsive, and proud to professionally serve our neighbors with expert diagnostics and repairs—done right the first time.

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Top-Quality Heating and Cooling Services Near Holliston, MA

Call Today for Your Heat Pump Repair!

Reliable, High-Quality Heat Pump Repair to Restore Comfort Fast

Heat Pump Repair and Holliston MA’s Trusted Heating & Cooling Professionals — Your Local Experts

When your heat pump struggles with no heat, weak airflow, uneven temperatures, short cycling, iced outdoor units, strange noises or odors, rising energy bills, refrigerant leaks, faulty reversing valves, thermostat issues, clogged filters, or drainage problems, SumZero Energy Systems delivers fast, precise Heat Pump Repair that gets results. Our process starts with a thorough diagnostic—checking refrigerant charge and pressures, inspecting coils and defrost controls, testing electrical components and sensors, verifying airflow and ductwork, and confirming thermostat and reversing valve operation—then we explain findings clearly, offer upfront options, and complete targeted fixes such as sealing leaks and recharging per EPA guidelines, replacing motors, capacitors, and contactors, cleaning coils and drains, and recalibrating controls to restore efficient, reliable comfort. Beyond repairs, we provide full-service HVAC solutions including new heat pump and AC installations, furnace and boiler service, ductless mini-splits, indoor air quality upgrades, smart thermostat integration, duct repair and sealing, preventive maintenance plans, and prompt emergency support. Count on SumZero Energy Systems for exceptional service, quality craftsmanship, and customer-first care—proudly and professionally serving the Holliston, MA area.

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Heat Pump Repair in Holliston

Know the Signs and Risks

If your heat pump isn’t running quite right, don’t ignore it. Review the common signs and risks that could signal trouble. Acting early can prevent bigger issues—and you can count on SumZero Energy Systems for prompt, expert help.

Increased energy bills without explanation

Sign

Refrigerant leaks or poor efficiency due to component wear

Risk

Higher utility costs and eventual system failure without timely maintenance

Estimated Time for Diagnostic:
30-45 minutes

Strange noises from the outdoor heat pump unit

Sign

Loose parts, failing compressor, or debris in the fan

Risk

Noise often indicates mechanical failure, potentially causing the system to stop working completely

Estimated Time for Diagnostic:
30-60 minutes

Reduced airflow or weak performance

Sign

Clogged filters, dirty coils, or ductwork issues

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Risk

Poor indoor comfort and strain on the heat pump, reducing efficiency and lifespan

Estimated Time for Diagnostic:
45 minutes

Outdoor heat pump unit frozen or iced over

Sign

Blocked airflow, refrigerant leaks, or faulty defrost controls.

Risk

Ice buildup can damage components, leading to costly repairs or system replacement.

Estimated Time for Diagnostic:
45–60 minutes

No switching between heating and cooling

Sign

Heat Pump faulty reversing valve or control board issues

Risk

System inefficiency leads to discomfort and higher energy bills.

Estimated Time for Diagnostic:
60-90 minutes

Schedule a Comprehensive Home Heat Pump Repair Near You in Holliston, MA

Is your home’s heating system acting up? Trust SumZero Energy Systems for reliable repair services near you. Schedule your appointment today and get expert help on the way!

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Frequently Asked Questions About Heat Pump Repair

Have questions about your heat pump? You’re not alone—homeowners across our community ask the same things, and SumZero Energy Systems is here with clear, trustworthy answers to help you feel confident about your repair options.

What makes SumZero a trusted heat pump repair company?
We specialize in heat pumps, offer honest pricing, and prioritize long-term comfort. Our experienced team is fully licensed, insured, and always respectful of your home.
Do you offer emergency heat pump repair?
Yes. If your system fails during extreme temperatures, contact us right away—we prioritize urgent repairs to keep your home safe and comfortable.
Will the repair affect my Mass Save rebate eligibility?
No, repairs won’t affect your rebate eligibility. In fact, having a well-maintained system is often a requirement to qualify for incentives.
What causes heat pumps to stop working in winter?
Freezing coils, dirty filters, or thermostat problems are common winter issues. Our technicians are trained to restore your system to proper heating mode quickly.
How quickly can you schedule a repair visit?
We offer prompt scheduling and do our best to accommodate same-day or next-day service depending on your location and availability.
Is it better to repair or replace my heat pump?
That depends on the age and condition of your system. If it’s under 10 years old and repairable, we usually recommend fixing. We’ll help you weigh your options honestly.
Can you fix the heat pump on the first visit?
In most cases, yes. Our team arrives prepared with common parts and tools. If we need to order something, we'll explain the timeline and next steps clearly.
What’s included in the diagnostic visit?
Our $99 diagnostic includes a full inspection of refrigerant levels, compressor health, thermostat function, airflow, and any error codes or performance issues.
Do you repair all heat pump brands?
Yes, our technicians are trained to diagnose and repair nearly all major heat pump brands, including ducted and ductless models.
How do I know if my heat pump needs repair?
Look for signs like weak airflow, strange noises, ice buildup, higher energy bills, or the system not switching between heating and cooling properly.