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tca9Tempstar Air Conditioners

Tempstar® SmartComfort® TXT+ Two-Stage Air Conditioners featuring the Observer™ communicating system are designed to take your home to a new level of comfort and efficiency. Teamed with our Observer communicating wall control and a Tempstar communicating fan coil or gas furnace, the SmartComfort TXT+ functions as part of a complete communicating home comfort system. Various components of the system “talk” to each other electronically, fine-tuning comfort levels while maximizing energy savings.

Tempstar Furnaces

Furnace Repair Neenah WI

Randerson Heating and Cooling provides homeowners in Seymour, Kaukauna, Appleton, Neenah, and Menasha with full service home heating repair and service solutions.  Pat Randerson and Nate Garvey have extensive experience with unit-vc97diagnosing home heating problems.  Their knowledge and expertise and their ability to make good recommendations so that you can decide which option is going to be best for you.  Repair or replace?  Pat and Nate will help you make the right choice.

We carry a complete line of high efficiency Tempstar furnaces and we’ll recommend the right equipment based on your comfort needs and budget.  Visit the Tempstar website to learn more about one the ten year no hassle replacement warranty.


Geo-Thermal technology runs on electricity but uses the earth’s thermal energy to pre-condition refrigerant used to heat and cool your home so you can enjoy higher energy efficiency inside—no matter how extreme the weather gets outside.  Randerson has the experience you need to install your geo-thermal system correctly to maximize your home energy efficiency.  Geo-Thermal systems save you money over time, reducing your monthly energy bills.


Energy from earth’s biggest power source: The earth itself.

There’s an invaluable energy source buried right in your own backyard: The earth itself. Forget oil or gas, geothermal systems tap into the relatively consistent temperatures of your yard, pond or well. This ingenious technology runs on electricity but uses the earth’s thermal energy to pre-condition refrigerant used to heat and cool your home so you can enjoy higher energy efficiency inside—no matter how extreme the weather gets outside.

Efficient with your energy. And your budget.

Given the cost and instabilities around energy sources like oil, the federal government is encouraging use of energy-efficient heating and cooling system alternatives. That’s why Uncle Sam is willing to give you a tax credit of up to 30% on the cost of buying and installing a geothermal system.

If your home has ductwork, forced-air or water-to-air heat pump models can supply treated air to heat and cool your home all year long.

If you have a radiant or hydronic system instead, our water-to-water heat pump models are made for you—and your home.


RenewAire’s advanced ventilation products are based upon a simple principal – bring equal amounts of healthier, fresh air into your home while exhausting the same amount out, and do this in the best energy-efficient manner as possible.

RenewAire Breeze


SANYO wall mounted air conditioners and heat pumps offer the utmost in versatility in solving your cooling and heating needs. By utilizing environmentally friendly R-410a refrigerant and DC Inverter technology, the SANYO air conditioner or heat pump, automatically adjusts its performance to meet the changing needs of the space while maintaining the desired temperature. This leads to increased efficiencies, low energy consumption and a very comfortable environment.


Air Conditioner Repair Appleton WIAs the innovator of small-duct, high-velocity (SDHV) central air conditioning systems, SpacePak delivers uniform, year-round comfort, with fewer of the unwanted challenges common to other central heating and air-conditioning systems. No major renovations, loss of usable floor space, high energy bills, or unsightly components; simply quiet, cost-effective comfort for virtually any home or small office, regardless of the structure’s design, age, size, or construction type.

You always hear about SEER and a HVAC unit’s efficiency, but did you ever think about ductwork having its own efficiency?

Heat can leak through the walls of the duct (thermal loss) and air can leak through its seams (duct leakage). In both cases, the Unico System is far superior to a conventional system. Insulation and size determine the thermal loss. Workmanship and design determine the duct leakage.

The Unico System ductwork has 1/3 the surface area of conventional ducting so before it is even installed the Unico System ductwork has 1/3 less thermal loss. The supply tubing is also wrapped with insulation and an outer vapor barrier, which keeps nearly all of the thermal energy within the duct.




Humidification—the process of adding moisture to the air—is one of the most important aspects of total indoor comfort, yet it’s one of the least understood.  Maybe this is because people associate humidity with the discomfort of hot, steamy summer days. And it’s true that too much humidity causes problems. Yet when properly controlled, humidity offers many proven benefits to your health, home and comfort.  Using an Aprilaire Whole-Home Humidifier is one of the most effective ways to add the proper amount of humidity to your indoor air and prevent the problems caused by dry air.


Honeywell (thermostats & controls)

Prestige® 2.0 Comfort System

Change the color display to match your home’s décor
Interview-based programming – practically programs itself
Connects to the Internet, displays Outdoor Conditions and offers Portable Comfort Control


Blower units are typically installed where discharge duct work is utilized or operating noise is an issue. Similar to the TC Tubular Blower Style Unit Heaterspropeller type units except a centrifugal blower is used to over come the static pressure of the duct work.

Sterling HVAC
Furnace Repair Appleton WI

Space Ray

At Space-Ray, comfort is a challenge we take seriously. We have been manufacturing gas-fired infrared heating systems since 1958. The quality and performance of our heaters are based on over 40 years of field experience and exposure to garage and residential heating problems. Our reputation is built upon a solid track record for providing highly radiant efficient, easy to install and high quality infrared heating equipment.


Honeywell (temperature zoning)

Honeywell developed its first residential temperature zoning systems in 1945. Since then, the market for individual room temperature control has continued to grow, and so has Honeywell’s leadership position in the category. For applications from two zones to 32 zones, and for products from panels to dampers to complete system kits, Honeywell is your single-source solution for zoning.


IBC Boilers

Our wall-mounted condensing boilers convert Natural Gas or Propane into heat with unprecedented efficiency, helping to stretch our precious supply of fossil fuels well into the future. We are dedicated to finding new and better ways to utilize the world’s dwindling energy resources while providing superior comfort, reliability and fuel savings to our customers.


Triangle Tube (boiler)

Triangle Tube, a pioneer in stainless steel heating equipment, continues to lead the industry in innovative, highly efficient, quality heating and domestic hot water products. Products include:

» Wall hung Condensing Boilers featuring a uniquely designed vertical fire tube heat exchanger. The heat exchanger is constructed of a 439 grade stainless steel and has the highest water content in the industry.

» Stainless Steel Indirect Fired Water Heaters featuring Triangle Tube’s exclusive “Tank-in-Tank“ design. Available in residential and commercial sizes.

» Stainless Steel and Titanium Heat Exchangers for swimming pools, industrial process, residential and commercial heating applications.


Uponor (pex tubing)

Enriching people’s way of life

Uponor’s core purpose is to partner closely with professionals to create better human environments. That means for more than 40 years, we have been seeking out innovative ways to ensure our PEX plumbing, radiant heating/cooling, hydronic distribution, pre-insulated pipe and fire sprinkler systems offer the most consistent, reliable and high-performing solutions available to residential and commercial structures around the globe.



Evergreen Blower Motor

Evergreen IM

Evergreen IM is high-efficiency ECM replacement motor that is designed to replace factory PSC blower motors in HVAC systems. That means you can now offer your customers the comfort and efficiency of ECM in an easy-to-install replacement motor.