Heating & Cooling

Heating and cooling is the largest energy expense for most homes, accounting for over 50% of energy use.


System Maintenance

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  • Filters & Vents

    Filters & Vents

    Filters & Vents

    A dirty filter slows down air flow due to the dust and dirt that builds up, and makes the system work harder – wasting energy. It can also lead to system failure and expensive maintenance. Be sure to check, clean or replace filters on furnaces and air conditioners at least once a month. Similarly, it’s important to keep air vents, warm-air registers, baseboard heaters, and radiators clean and unobstructed, as well as the area around outdoor air conditioners and heat pumps.

  • Ducts



    Ducts are used to distribute conditioned air from your furnace and central air unit throughout your house, and when properly installed can make your home more comfortable and energy-efficient. However, in a typical house, about 20% of air traveling through ducts is lost due to leaks, holes, and poor connections. This can add hundreds of dollars a year to your energy bills and make rooms stuffy and difficult to heat and cool.Ducts are often concealed in walls, ceilings, attics, and basements which can make repairing them a challenge. It is a good idea to work with a professional when making duct system improvements. If you choose to take the project on yourself, start by sealing air leaks using mastic sealant, metal tape or other heat-approved tapes (not duct tape). Insulate all the ducts that you can access and make sure that the connections at vents and registers are well-sealed where they meet the floors, walls, and ceiling.

  • Check-ups



    To ensure optimal performance and prolong the life of your heating and cooling equipment, it’s a good idea to schedule annual checkups with a professional technician. They are trained to do a thorough inspection for proper function and make necessary adjustments or tune-ups.

  • Upgrades



    If your equipment is old, needs frequent repairs or just doesn’t keep your house comfortable despite your maintenance efforts, you may be ready for an upgrade. If you’re in the market for a new heating and/or cooling system consider equipment that is ENERGY STAR® qualified. When purchasing an air conditioner, look for a high Seasonal Energy Efficiency Ratio (SEER). The current minimum is 13 SEER. The most efficient system for your home will also depend on other factors related to where you live such as the climate and your need for heating and cooling, the size of the space you are conditioning and the effectiveness of the insulation inside your house.

layers of wall insulation


Insulation is what keeps your home warm in the winter and cool in the summer, and is usually found in the attic, ceiling, exterior walls, basement, crawlspaces, floors above unheated garages and sometimes ducts if they are in unconditioned spaces. Insulation works by providing resistance to heat flow, and when effective, allows you to use less energy to maintain a comfortable temperature in your home.

Insulation performance is rated in terms of thermal resistance, called R-value, the higher the R-value, the more effective the insulation. R-value depends on the type of material, thickness and density of the insulation however overall effectiveness of the insulation in your home also depends on where it is located and how well it is sealed.

Common types of insulation include fiberglass, cellulose, rigid foam board and spray foam. The best choice for insulation will depend on where you plan to install it and what the recommended R-value is for that area. If you’re unsure of your insulation needs, a qualified home energy auditor can help you assess how much insulation you already have in your home, and identify areas that could use insulation, air sealing or other adjustments to help you save money on energy costs.

Cracks and openings around your home result in air leaks’, which is what happens when conditioned air escapes, and outside air enters uncontrollably.

Air leaks are commonly found around windows and doors, holes hidden in attics, basements, and crawlspaces, and where foundations and walls meet. Air leaks cause uncomfortable drafts and room temperatures, strain on heating and cooling systems, and sometimes even moisture problems that cause mold and structural damage. Air sealing helps prevent these issues by blocking the movement of air and is done using varying types of caulk, spray foam or weather-stripping.

Some air leaks are easy to find and fix because you can actually feel the draft and they are readily accessible. However, using a qualified home energy auditor can be helpful if you want assistance identifying and sealing the less obvious air leaks, and determining how well your house is ventilated.