Products & Services

Quality Heating & Air Conditioning Products and Services for Your Home in Oshawa and Port Perry!

At Cullen Heating & Air Conditioning, we are proud to say that every one of our products meets or exceeds federal standards for efficiency. We offer a variety of heating and cooling system options to best fit your home or business needs in the Oshawa and Port Perry areas. We carefully consider your priorities when providing an in-home assessment.

We are proud to provide the highest quality air conditioner repair, installation, and maintenance services in Oshawa and Port Perry. Our expert technicians are well-equipped to handle all your air conditioner repair needs, ensuring efficient and reliable performance. Whether you require the installation of a new air conditioning system or routine maintenance services, we have you covered. Our team of HVAC experts are dedicated to delivering exceptional installation and maintenance services that meet your specific requirements.

We are committed to providing our customers with the best service possible and guarantee all of our air conditioner repair, installation, and maintenance services.

If you need air conditioner or heating repair, installation, or maintenance services, contact us today. Our team is here to help you with all your home comfort needs, ensuring your air conditioning system operates at its best efficiency and keeps your indoor environment comfortable throughout the year.

Top-Quality Furnace Solutions

FurnaceCullen Heating & Air Conditioning is a proud retailer for Comfortmaker furnaces. Let us help you select your next home heating solution!

Two Stages, More Comfort

The sturdy steel cabinet is thermal-lined and insulated to reduce the amount of heat and operating noise that escapes. A sealed-blower compartment, soft-mount components, and variable-speed blower motor also reduce operating sounds. When matched with select Comfortmaker air conditioners and evaporator coils, the ECM variable-speed blower motor can also boost cooling efficiency for increased SEER rating.

Warranties That Work for You

Comfortmaker units are backed by exceptional warranties, including the No Hassle Replacement™ limited warranty, which gives the original purchaser a replacement unit if the stainless-steel heat exchanger should fail due to defect within the first 10 years. Upon timely registration, you also get a 10-year parts limited warranty and a lifetime limited warranty on the heat exchanger.

Seal Your Home Against Winter

The heart of every furnace is the heat exchanger. The proven RPJ® (Rigid Press Joint) stainless steel heat exchanger is designed to move more heat to the outside surface for increased heat transfer. The weld-free interlocking clamshell design reduces cracking or separating over the life of the gas furnace. Stainless steel construction adds durability and resists corrosion. The RPJ heat exchanger plays a significant role in boosting this model’s efficiency to a 96% AFUE rating. So, you can count on energy savings – especially compared to an older, less-efficient furnace.

When it comes to your Heating and Furnace needs, we have you covered with expert installation, reliable repair services, and maintenance to ensure your systems run smoothly and efficiently.

Enhance Your Ambiance With A New Fireplace

We do service and safety fireplace checks.

Man talking on phone beside gas fireplace
Fire Bowl, Outdoor fire Pit

Energy-Efficient Air Conditioning Solutions for Every Home

Ait ConditionerReplacing your air conditioner is not a simple decision. You expect to be cool and comfortable in your home. Cullen Heating & Air Conditioning goes beyond the basics by designing and installing a system that is compatible with your home’s distribution system and your personal needs.

When it comes to air conditioner repair in Oshawa and Port Perry, we have the expertise and experience to handle any repair problem you may have. We never take shortcuts and ensure that all repairs are done correctly and safely. We also provide a wide range of air conditioning services, from simple maintenance and repairs to more complex installations and replacements. If you need air conditioning services for your home or business, we are the team to call.

We also offer air conditioner installation and replacement services in Oshawa and Port Perry. Our team is experienced and can install any type of air conditioner, whether you need a split system, ductless system, or wall-mounted system. We can help you select the right system for your property and ensure that it is installed correctly and safely.

When it comes to your Air conditioning needs, we have you covered with expert installation, reliable repair services, and maintenance to ensure your systems run smoothly and efficiently.

Efficient Heat Pump Solutions

At Cullen Heating & Air Conditioning in Durham, we’re proud to offer a range of energy-efficient heating and cooling solutions for your home or business. Whether you’re looking for a mini split or central ducted Heat pump installation, our expert team has the skills and experience to get the job done right.

We offer a full range of HVAC services in Oshawa and Port Perry, including Heat pump installation, maintenance, and repairs. Our team can help you select the right Heat pump system for your home or business, ensuring maximum comfort and energy efficiency all year round.

In addition to our Heat pump installation services, we offer a variety of other HVAC services, including air conditioning installation and repair, Furnace installation and repair, and more. No matter what your heating and cooling needs may be, our team has the expertise to provide you with high-quality, affordable solutions.

When it comes to your Heat Pump needs, we have you covered with expert Heat Pump installation, reliable repair services, and maintenance to ensure your systems run smoothly and efficiently.

Humidifier Solutions For Everyone


Do you find the air in your home dry? Install a flow-through humidifier and notice the difference. No more stale, dirty water – a flow-through humidifier uses water on demand. Unused water goes to the drain. The flow-through works when you need it. Ideal for asthma and allergy sufferers!

Reliable Water Tank Solutions

Looking for a reliable hot water solution for your home? Look no further than Cullen Heating & Air Conditioning. We offer a range of high-quality hot water tanks and tankless water heater systems to meet your needs.

Our tankless water heater systems provide a reliable supply of hot water exactly when you need it. With their compact design and energy-efficient operation, these systems are a great choice for homeowners looking to save money on their energy bills.

In addition to our tankless water heater systems, we also offer a variety of hot water tanks designed to provide reliable hot water for your showers, washing, and other home applications. Our expert technicians can help you select the right hot water system for your home, ensuring maximum comfort and energy efficiency.

At Cullen Heating & Air Conditioning, we’re committed to providing our customers with high-quality, affordable HVAC services in Oshawa and Port Perry. Whether you need a new tankless water heater, hot water tank installation, or maintenance and repairs for your existing system, our team has the expertise to get the job done right.

Contact us today to learn more about our hot water solutions and other HVAC services in Oshawa and Port Perry. We’re here to help you stay comfortable and energy-efficient all year round!

Bradford WhiteHot Water Heater
Hot Water Heater
John Wood Logo
Hot Water Heater

Breathe Clean and Fresh Air with Air Cleaners

UV Ultra Violet Lights Available.

What You Should Know About Indoor Air Quality

What you don’t see can hurt you! Visible dust makes up only 1% of all the particles in the air. Many more unseen particles float in the air currents inside your home. Particles sized less than 1 micron can gain the easiest entry to your body and place the biggest burden on its defense system.

How a Honeywell Electronic Air Cleaner Works

Two-stage electrostatic precipitation electrically charges air particles to create an effective method for capturing airborne contaminants.

Stage 1 – Charging Section

  • Most large particles are caught on the pre-filter screen.

  • Smaller particles flow through the screen to the first section of the air cleaner cell, where they pass through a series of high-voltage ionizing wires – more than 8,000 volts – and become electrically charged.

Stage 2: Collector Section

  • Charged particles advance through the cell to the collecting section.

  • The charged particles are attracted like magnets to a series of oppositely charged collector plates.

  • Electronically filtered air is circulated back into your home


Specials on Water Heaters!

We supply and install water heaters to suit your needs – all types and sizes! Call today for a free estimate. Rent to own or purchase outright. You’ll appreciate our competitive rates!


Cullen Heating & Air Conditioning is an expert at converting your home heating from electric baseboard to natural gas heating. If there is gas on your street, we will apply for a gas meter for you. Once the meter has been ordered and installed, you are ready to convert your home to natural gas.

Our technicians are professionals in custom ductwork for your home. The cost associated with this conversion used to be high. Call for pricing.

The money saved on converting from electric to gas will be tremendous. If you require financing to help pay for the conversion, the savings from what you were paying for hydro to what you will now pay for the loan for the conversion will put you further ahead at the end of the day.

Financing is available upon request! 

Let us help you decide. A free in-home estimate will determine if a conversion is right for you.

Generalaire 1042 Humidifiers on Special

Is your home dry? Call today to have your new humidifier installed to help maintain the humidity in your home. From $495 and up, installed!

Other Home Comfort Products

Coupled with our many HVAC products, at Cullen Heating & Air Conditioning we also carry:

  • Heat Recovery Ventilators

  • Programmable Thermostats

  • And More!

Contact us for more information or to book your free estimate today!

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Family enjoying the warmth of the fireplace

Trusted Experts in Heating and Air Conditioning Products and Services