Heat Pump Repair Near Lexington, 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 Lexington, MA

(508) 443-6451
(508) 443-6452
(508) 443-6453
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Honest Heat Pump Repair in Lexington — Fair, Upfront Pricing

Our licensed technicians bring deep experience to every job. They receive ongoing training and use well-stocked vans and reliable testing tools. Most Heat Pump Repair can be resolved on the first visit.

We explain every option and price before work begins, so there are no surprises. We service most equipment brands and models. Your comfort matters to us, and we back our work with a satisfaction guarantee.

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SumZero Energy Systems is Here for All of Your Heat Pump Repair Needs in Lexington, MA!

  • Fully Stocked Trucks  
  • Friendly Professionals  
  • Fully Licensed & Insured  
  • Same Day Service Available  
  • 100% Satisfaction Guarantee  
  • Complimentary 2nd Opinions

We’re ready to help with Heat Pump Repair in Lexington, MA, whenever you need us. Our team proudly and professionally serves homeowners throughout the local area, delivering reliable service and clear communication every step of the way.

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Top-Quality Heating and Cooling Services Near Lexington, MA

Call Today for Your Heat Pump Repair!

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

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

When your heat pump isn’t keeping up, SumZero Energy Systems provides precise Heat Pump Repair that starts with expert diagnostics—verifying thermostat calibration, checking refrigerant charge and pressures, inspecting electrical connections and capacitors, testing the reversing valve and defrost controls, assessing airflow and ductwork, and cleaning coils and drains to restore peak performance. We quickly resolve common issues like no heat or cooling, weak airflow, short cycling, ice or frost buildup, unusual noises, musty odors, and rising energy bills. Beyond repairs, our full-service team offers preventative maintenance and tune-ups, emergency response, new system replacement and installation, ductless mini-splits, indoor air quality solutions, and smart thermostat upgrades—delivered with exceptional service, transparent pricing, and quality craftsmanship. Count on SumZero Energy Systems to diagnose accurately, fix it right the first time, and keep your home comfortable—proudly and professionally serving the Lexington, MA area.

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Heat Pump Repair in Lexington

Know the Warning Signs and Potential Risks

If your system seems off, don’t ignore it. Review the common signs and risks that point to trouble with your heat pump. Addressing issues early can prevent costly breakdowns—and SumZero Energy Systems is here to help Lexington homeowners promptly.

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

‍

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 Lexington, 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 odd noises, rising energy bills, or uneven comfort? You’re not alone—SumZero Energy Systems is here with clear, trustworthy answers to your most common heat pump repair concerns.

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.