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  • Jun 24, 2021
  • By NextEra Home

Your Water Heater’s Broken? Here’s How You Fix It

Here are the most common problems with heaters:

  • Low batteries in thermostat
  • Broken thermostat
  • Leaky duct
  • Dirty air filter
  • Closed vents
  • Settings are wrong

When your central heat isn’t working, you may be able to fix it yourself with little effort. Many problems can be avoided by regular maintenance while others can be fixed fairly easily.

Quick tips for heating issues:

  • Make sure your thermostat is set to “Heat.” The fan should also be set to the “On” or “Auto” position. Once you’ve done this, you can adjust your temperature setting 5 degrees higher—then wait five minutes to see if you notice a change.
  • Look for and remove any blockages in your grills, vents and air returns.
  • Check your air filter to ensure it’s clean.

My heater is blowing cold air.

First, make sure your thermostat is properly set and all of your air vents are open.

Check to see if your air filter is dirty. If it is, clean it with water and a soft brush - or replace it with a new one.

After checking the filter, make sure the fan is functional. If not, this repair may require a qualified technician.

Other potential problems include a lack of fuel or an unlit pilot light. 

If you’ve ensured that none of the issues above are causing the problem, we strongly recommend calling a professional HVAC technician.

My heater won’t shut down.

If your central heater won’t shut down, there are a few potential causes.

First, make sure the heater is set to “Auto” – not “On.” If it is set to “Auto,” here are the three most common causes:

  • Your thermostat is broken
  • Your thermostat is wired improperly
  • You have a malfunctioning furnace blower

For these issues, we recommend calling in a professional service technician for the repair.

Parts of my house are not receiving heat.

If it’s only certain areas of your house that aren’t receiving heat, this is typically an issue with leaky ductwork or dirty filters.

First, make sure your air filters are clean. If not, replace or clean them with warm water and a soft brush.

Next, make sure your ductwork isn’t leaking. Don’t forget to check the attic for leaks. If you find any leaks, you can seal and insulate the ducts—this should fix the problem.

Is it time to replace your heater?

If you’re having multiple and/or ongoing issues with your heating system, we recommend replacing it with a high energy efficiency rating HVAC unit. In addition to solving your issues and having better peace of mind, you may reduce your monthly energy bills significantly.


Get a free quote on a home warranty plan from NextEra Home.