Heat Pump Repair
When your heat pump isn’t performing as it should, you need dependable heat pump repair service you can rely on. At Dunn Heating and Air Conditioning, we diagnose and repair all types of heat pump problems across the Waterloo region, helping keep your home comfortable throughout every season. Our certified technicians have extensive hands-on experience working on heat pumps of all brands and models, providing fast, professional repairs that restore system performance.
From minor tune-ups to major heat pump repair jobs, we approach every project with the same commitment to workmanship and customer satisfaction that has made us a leading name in home comfort services. Don’t let a faulty system affect your comfort—contact us to arrange your heat pump repair today.

Professional Heat Pump Repairs for Your Home
Air-Source Heat Pump Repairs
Air-source heat pumps offer excellent efficiency but may develop issues like frost buildup, refrigerant leaks, or compressor failures. Our heat pump repair specialists accurately identify these issues and carry out repairs that bring your system back to peak efficiency. During each service visit, we inspect airflow, clean the coils, check electrical components, and verify proper refrigerant levels.
Ductless Heat Pump Repairs
If your ductless mini-split system shows signs of reduced output, error codes, or drainage problems, our technicians offer quick, effective repairs. We service indoor air handlers, outdoor units, and connecting lines to ensure your ductless system continues running smoothly and efficiently.
Hybrid Heat Pump System Repairs
Hybrid or dual-fuel systems, which pair heat pumps with furnaces, require a team skilled in both heating technologies. We fix common issues like faulty system switching, control board failures, or incorrect balance points that affect performance. Our repairs make sure your hybrid system shifts seamlessly between energy sources for maximum comfort and energy savings.
Emergency Heat Pump Repairs
If your heat pump breaks down during extreme conditions, our emergency repair team is ready to respond quickly and restore comfort to your home. Available outside of standard business hours, our skilled technicians arrive prepared with the tools and replacement parts needed to fix most urgent problems in one visit, helping minimize downtime and discomfort.
Our Heat Pump Repair Process
1
Our certified technician will begin with a full inspection of your heat pump system, carefully checking each component to find the cause of any malfunction or performance decline.
2
Once we identify the issue, we’ll clearly explain the problem and offer a detailed overview of the repair options available, including upfront, transparent pricing before any work is started.
3
Upon receiving your approval, our technician will complete the necessary repairs using manufacturer-approved parts and proven repair methods. After the heat pump service is finished, we conduct final testing to make sure your system is performing at its best.
Why Choose Dunn Heating and Air Conditioning for Your Heat Pump Repairs?
Certified and Experienced Technicians
Our repair specialists undergo continuous training and maintain important industry certifications. With years of experience working on heat pumps from all leading manufacturers, our technicians are able to quickly troubleshoot and fix even the most complex problems. Their skill ensures that repairs are handled properly the first time, reducing the risk of further issues.
24/7 Emergency Availability
Heat pump issues can happen at any time, which is why we provide 24/7 emergency repair services across the Waterloo region. You can count on fast response times, with our technicians arriving fully equipped to complete most repairs right away, helping restore your home comfort without delay.
Transparent, Upfront Pricing
Before any repairs begin, we provide you with clear, detailed estimates for your heat pump service. There are no hidden charges or unexpected costs—the price we quote is exactly what you pay. Our straightforward pricing approach allows you to make confident, informed decisions about maintaining your home’s comfort system.
Comprehensive Warranty Protection
We back our heat pump services with strong warranty protection. All labour is covered under a workmanship warranty, while replacement parts are supported by manufacturer warranties for added peace of mind.
Contact Dunn Heating and Air Conditioning to Schedule Your Heat Pump Repair
Don’t allow heat pump issues to impact your home’s comfort another day. Contact Dunn Heating and Air Conditioning to book your heat pump repair appointment at a time that suits your schedule.

FAQS About Heat Pump Repair
When Do I Need to Call a Professional for a Heat Pump Repair?
Contact Dunn Heating and Air Conditioning for heat pump service if you notice any of the following:
- Strange noises such as grinding, scraping, or loud banging coming from your heat pump
- Complete system breakdown where your heat pump won’t start or frequently shuts off
- Uneven heating or cooling with fluctuating room temperatures
- Ice accumulation on the outdoor unit beyond typical defrost cycles
- Reduced airflow from your vents
- Electrical problems, like circuit breakers tripping when the heat pump operates
- Unexplained spikes in your energy bills
- Frequent system cycling with the unit turning on and off repeatedly
- Refrigerant leaks are detected by hissing sounds or diminished cooling
- Error messages appearing on your thermostat or system display
- Excess water leakage from the indoor unit beyond normal condensation levels
- A heat pump older than 10 years showing signs of reduced efficiency
Trying to fix these problems without the right training can cause further damage, void warranties, or create safety risks. Our skilled technicians are ready to deliver professional heat pump repairs that restore your system’s efficiency and reliability.
What are the Benefits of Hiring Dunn Heating and Air Conditioning for My Heat Pump Repair?
Choosing Dunn Heating and Air Conditioning for your heat pump service brings real advantages to your home’s comfort and system reliability. Our technicians have specialized training that enables them to accurately identify problems, resolve the underlying issues instead of just addressing surface symptoms.
This level of expertise saves you time and money, as our team comes prepared with the right tools and parts to complete most repairs in a single visit, reducing delays. Professional repairs also protect your manufacturer’s warranty, which often requires certified service to remain valid.
Safety is another major benefit—our technicians are qualified to work with refrigerants, electrical systems, and pressurized components, minimizing any potential hazards. With 24/7 emergency repair services across the Waterloo region, Dunn Heating and Air Conditioning ensures you’re never left without support when you need it most.