How to Keep Your Home Warm Without Overworking Your HVAC System
When winter temperatures reach Middle Tennessee, your heating system may run longer to keep the house comfortable. Some additional runtime is normal during cold weather, but air leaks, restricted airflow and neglected maintenance can make the equipment work harder than necessary.
These practical steps can improve comfort while reducing unnecessary strain on your furnace or heat pump.
Seal Drafts and Air Leaks
Cold outdoor air entering through gaps around windows, doors and exterior penetrations can make rooms uncomfortable and increase heating demand.
Check for drafts around:
Exterior doors
Window frames
Plumbing and wiring penetrations
Attic access doors
Dryer vents
Fireplace dampers
Baseboards along exterior walls
Weatherstripping and caulk can correct many small leaks. Larger problems or leaks near combustion equipment should be evaluated professionally.
Keep the fireplace damper closed when the fireplace is not operating, but never close it while a fire is burning or embers remain.
Use Curtains and Sunlight
Open curtains on sunny windows during the day to allow solar heat into the room. Close them after sunset to reduce heat loss through the glass.
Do not allow curtains to block supply vents, return grilles or wall-mounted heating equipment.
Program the Thermostat Properly
Constantly turning the thermostat up will not heat the home faster. It simply gives the system a higher temperature to reach.
The U.S. Department of Energy recommends temperature setbacks during sleeping or unoccupied periods as a way to reduce energy use. However, the best strategy depends on your heating equipment.
Conventional furnaces
A scheduled temperature reduction may save energy when the home is empty or everyone is asleep. A programmable thermostat can restore the preferred setting before occupants wake or return.
Heat pumps
Large setbacks may cause electric auxiliary heat to operate during recovery, potentially reducing the expected savings. Heat-pump owners should use a compatible thermostat and follow the equipment manufacturer’s recommendations.
If you do not know which heating system you have, an HVAC technician can identify it and help configure the thermostat correctly.
Keep Supply and Return Vents Open
Blocked vents reduce airflow and can contribute to uneven temperatures or longer heating cycles.
Make sure:
Furniture does not cover floor registers
Rugs are not placed over vents
Curtains do not block wall registers
Return-air grilles remain clear
Vent covers are clean and open
Closing vents in unused rooms usually does not provide the expected savings. It can alter pressure within the duct system and interfere with airflow.
Check the HVAC Filter Monthly
A dirty filter restricts airflow and can make heating equipment work harder. Check the filter every month during heavy-use seasons and replace it when dirty or according to the equipment and filter manufacturer’s instructions.
Homes with pets, remodeling dust or heavier HVAC use may need more frequent replacement. Avoid installing a filter with a higher resistance rating than the system can accommodate.
Use Ceiling Fans on Low Speed
Warm air naturally rises toward the ceiling. Many ceiling fans include a winter setting that gently redistributes this air without creating an uncomfortable breeze.
Use the fan at its lowest speed and select the direction recommended by its manufacturer for winter. On many fans, this is clockwise when viewed from below, but blade designs can differ.
Turn fans off in unoccupied rooms because fans redistribute air; they do not generate heat.
Improve Insulation
Heat can escape through under-insulated attics, walls, floors and crawlspaces. According to the Department of Energy, insulation reduces heat flow and can improve comfort while lowering heating and cooling demand.
Areas that may need attention include:
Attic floors and access doors
Floors above garages or crawlspaces
Knee walls around bonus rooms
Ductwork outside conditioned areas
Exterior walls in older additions
Air sealing and insulation should be planned together. Moisture, ventilation and combustion-air requirements must also be considered before making significant changes.
Use Space Heaters Carefully
A portable space heater may help warm an occupied room, but it must be used safely. Space heaters also use a substantial amount of electricity and may not lower total energy costs if the central thermostat remains unchanged.
Follow these safety practices:
Keep the heater at least three feet from bedding, curtains and furniture
Place it on a stable, level surface
Plug it directly into a wall outlet
Never use an extension cord or power strip
Keep children and pets away
Turn it off before sleeping or leaving the room
Follow the manufacturer’s instructions
Use a model with tip-over and overheat protection
Do not use an oven, outdoor heater or unvented combustion appliance to heat the home.
Schedule Heating-System Maintenance
Professional maintenance can identify airflow, electrical, combustion and mechanical problems before they cause a winter breakdown.
Depending on the equipment, an appointment may include:
Inspecting electrical connections and controls
Checking filters and airflow
Examining blower components
Inspecting burners and ignition
Evaluating the heat exchanger
Checking heat-pump operation
Inspecting condensate drainage
Confirming thermostat performance
Testing safety controls
Gas furnaces require particular attention because combustion and venting problems can create safety hazards. Every home with fuel-burning equipment should also have properly installed and operating carbon monoxide alarms.
Know When Your Heating System Needs Service
Contact an HVAC professional if you notice:
Weak airflow
Uneven heating
Unusual noises
Burning or electrical odors
Frequent cycling
A system that runs continuously without reaching the thermostat setting
A sudden increase in energy use
A tripped breaker that will not remain reset
A carbon monoxide alarm
Leave the home and contact emergency services or the gas utility from a safe location if you smell gas or a carbon monoxide alarm activates.
RCI Mechanicals provides heating-system maintenance, repair and installation in Murfreesboro and Middle Tennessee. If your furnace or heat pump is struggling to keep up, contact RCI Mechanicals for an evaluation.