Smarter from the Ground Up™ Heat & cool your home the smart way

Our purpose is to transform the way we use energy, protect resources for future generations and give people the freedom to focus on life.

Comfort that gives back

Geothermal heat pumps are not only the most comfortable way to heat and cool, they’re also the most cost effective. They’re versatile enough to excel in almost any home or any environment, and you’ll find geothermal in more than 1 million households across Canada and all 50 U.S. states. They can be scaled for single-family homes to entire college campuses. In fact, we heat and cool our entire 110,000 square-foot headquarters with WaterFurnace equipment. Here are a few reasons why geothermal is one of the fastest growing technologies available for your home.

Extra savings for geothermal

A 30% tax credit on equipment and installation costs is currently available to U.S. homeowners who install an ENERGY STAR rated geothermal system. The credit can be used to offset both AMT and regular income taxes and can be carried forward into future years. The 30% tax credit will last until the end of 2032 when it is scheduled to decrease to 26% in 2033 and 22% in 2034. Hurry and act now for the most savings!

Energy Efficient

The best ordinary systems deliver less than one unit of energy for every unit they consume. But many WaterFurnace systems can deliver five or more units of energy for every one unit of electrical energy used. That translates into an efficiency rating exceeding 530%, while the most efficient gas furnace which rates only 98%.


WaterFurnace units are designed to run more often at low speeds to provide stable temperatures throughout the home and help eliminate hot or cold spots. This is especially true with variable capacity units. They provide a comfort you need to experience to believe. To achieve precise control over temperatures in up to 6 areas, add our IntelliZone2 zoning system.

Cost Effective

Because of the extraordinary efficiency of a WaterFurnace system, most homeowners save more on monthly bills than they pay for the system when installation costs are added to the mortgage. Any added investment over traditional equipment is usually recovered in just a few years, and many homeowners see a return on investment of 10-20% over the life of the system.


WaterFurnace systems don’t require noisy outdoor units that can disturb your peaceful surroundings. And, we’ve engineered the indoor system to be as quiet as possible. Since it runs at lower speeds more consistently, the amount of noise coming from the unit is minimal.

Environmentally Friendly

Geothermal systems are recognized by the United States Environmental Protection Agency as the most environmentally friendly, cost effective and energy efficient heating and cooling technology available. These systems also minimize the threats of acid rain, air pollution, the greenhouse effect and global warming—problems directly linked to the burning of fossil fuels. In fact, installing a single geothermal unit is the environmental equivalent of planting 750 trees or removing two cars from the road.


Geothermal units aren’t subjected to the punishing effects of outdoor weather or fuel combustion, so they last longer than nearly any other heating and cooling system. According to the American Society of Heating, Refrigerating, and Air Conditioning Engineers, geothermal units have an average equipment life of 25 years while the underground loop system has a rated material life of more than 100 years. Ordinary air conditioners, furnaces and heat pumps are rated for only 12-18 years.

Clean Air

WaterFurnace units circulate air more often, which naturally filters the air. Many units also come standard with large, high efficiency MERV 11 filters to provide exceptional indoor air quality and protect your family from dust and pollen.


Package systems are available that provide heating, central air conditioning, and supplemental domestic hot water for your entire home in an all-in-one unit. For homeowners with less utility space, WaterFurnace also offers split units. Horizontal, vertical and bottomflow configurations are available for a wide range of residential applications, including newly constructed as well as existing homes


Because natural gas, propane, or oil isn’t required to operate a WaterFurnace system, there’s no combustion flames or fumes, and no chance of carbon monoxide poisoning.

A system for every home

This brochure highlights our extensive residential product line. We’ve included descriptions of the products, features and applications along with a side by side comparison. Although all WaterFurnace products are designed and built to the highest standards, each group of products is unique in its own way. Therefore, we’ve included a 5-star rating system for each group to clearly demonstrate a “Best, Better, Good” rating based on overall efficiency, performance, features and application flexibility.

The most efficient way

All WaterFurnace ENERGY STAR units are recognized as ENERGY STAR Most Efficient for 2024, representing cutting edge efficiency and the latest in technological innovation.

7 SERIES 700A11

Variable Speed All-In-One Unit
Overall efficiency, performance & features: 43.5 EER / 5.1 COP

The 700A11 represents the best of the best. It delivers premium comfort and performance using variable-speed technology. In fact, the 700A11 was the first to offer variable capacity in a residential geothermal unit and utilizes our all-aluminum PinnaCoil™. Because our system is not limited to just one or two speeds like ordinary units, it can adjust to exactly the level needed for the heating or cooling you want. That means not only greater efficiency, but also greater comfort. Plus, with our OptiDry™ integrated reheat coil dehumidification technology, your system can provide best-in-class whole-house humidity control without a separate, space-eating unit or additional wiring, electrical circuits, ductwork, or thermostats.

5 SERIES 500A11

Single or Dual Capacity All-in-One Unit
Overall efficiency, performance & features: 28 EER / 4.8 COP

The 5 Series 500A11 provides forced air heating, air conditioning, and even generates a portion of your home’s hot water—all from a single unit. You’ll experience a level of comfort and savings that’s far greater than any ordinary system without the risks of utilizing fossil fuels. The 5 Series represents some of our highest efficiencies and is available in a range of sizes and configurations to allow convenient installation in any home. No matter what climate you live in, your WaterFurnace system will deliver.

3 SERIES 300A11

Dual Capacity All-in-One Unit
Overall efficiency, performance & features: 22.3 EER / 4.1 COP

Performance meets value with the 300A11. This system represent the culmination of 30 years of research, engineering, and manufacturing experience to give you incredible comfort at a great price point. From this one interior unit, you’ll get forced air heating and air conditioning, as well as a portion of your home’s hot water. Plus, you’ll save energy with the dual capacity design that adjusts depending on your home’s needs. And you won’t have to worry about durability—the 300A11 features an all-aluminum air coil, providing peace of mind for years to come.

Hydronic Units

5 SERIES 504W11

OptiHeat Water-to-Water Hydronic Unit
Overall efficiency, performance & features: 16.1 EER / 3.3 COP

The 504W11 is a single-stage hydronic geothermal heat pump that’s used for high temperature water-to-water applications. It’s ideal for boiler replacement‚ especially with baseboard or cast iron radiation heating—or radiant floor applications. OptiHeat vapor injection technology utilizes an additional heat exchanger to divert excess heat and reinject it into the system, making it incredibly efficient. For those who have large hot water demands, using a 504W11 is up to four times more efficient than an ordinary water heater.

5 Series 500W11

Water-to-Water Hydronic Unit
Overall efficiency, performance & features: 17.5 EER / 3.1 COP

The 500W11 single-stage hydronic heat pump is a perfect add-on for homeowners needing high volume or dedicated hot water for radiant floors, spa/pools or snow melt. With this geothermal solution, your hot water bills can go down by about 60% per year.


Large Water-to-Water Hydronic Unit
Overall efficiency, performance & features: 22 EER / 3.5 COP

The Envision NDW is designed to meet the high-volume water demands of today’s larger luxury homes. NDW units provide highcapacity heating and cooling performance but still deliver the features homeowners have come to expect from our Envision line. Two high-efficiency single speed scroll compressors keep operating costs low for pool/spa heating, radiant floor, snow melt, aquaculture and process water installations.

Forced Air/Hydronic Combo Unit


Dual Capacity Combo Unit
Overall efficiency, performance & features: 25.7 EER / 4.2 COP

With the Synergy3D, you get the best of both worlds: the convenience of forced air heating and cooling with the comfort of radiant floor heat—all in a single unit. The system will provide radiant heat to basement and bathroom floors and cool and heat the rest of your home with forced air using dual-capacity scroll compressors for unmatched efficiency. With hot water assist, the Synergy3D can determine when there is excess heat available to route to the hot water heater. This allows you to utilize heat in the most efficient way possible. In fact, in cooling mode, waste heat is recovered and hot water is free.

Split Units

7 SERIES 700R11 Indoor Split

Variable Capacity Indoor Split Unit
Overall efficiency, performance & features: 40.8 EER / 5.2 COP

The 700R11 takes everything you love from the 700A11 and gives it more flexibility with its split design. WaterFurnace’s variable speed innovations are put on display in this top-of-the-line unit, which gives you power, comfort and efficiency. The 700R11 combines with the SVH Air Handler to provide heating, cooling and hot water to the whole house. And because the system is constantly adjusting based on your home’s needs, energy won’t be wasted and it will always feel just right.

5 SERIES 500R11 Indoor Split

Indoor Split Unit
Overall efficiency, performance & features: 25.3 EER / 4.4 COP

The 500R11 is an indoor split unit that helps accommodate spaces where all-in-one systems would be difficult to install, like attics or crawl spaces. When connected to our SAH Air Handler the unit can efficiently heat and cool your entire home and even provide some of its hot water. When combined with a fossil fuel furnace, the system automatically selects the most efficient fuel source for your home regardless of outside temperatures. Because there is no outdoor fan like ordinary air conditioners or heat pumps, the unit is extremely quiet.

5 SERIES 500RO11 Outdoor Split

Outdoor Split Unit
Overall efficiency, performance & features: 25.3 EER / 4.4 COP

Free up space in your home while still reaping all of geothermal’s benefits with the 500R011 outdoor split. In most homes, the unit is paired with WaterFurnace’s SAH Air Handler for all-geothermal operation. In extremely cold climates, the unit can also be paired with a fossil fuel furnace for “dual fuel” operation. The 500RO11 will use geothermal in most situations but can boost heat output during stretches of particularly cold temperatures using your existing furnace