A message from the owner

Below is a list of easy things that could go wrong with your system. Things your mom could fix with no problem. I can help you fix more complicated problems but there are a couple of conditions:

  • My advice is free – which means there is no warranty, no expectations of me or Calvert of any kind. If you want expectations and warranties, place a service call. We have outstanding capabilities, but we charge a fee for them.
  • I am busy, but I will get back to you as soon as I can because I enjoy it. If it can’t wait because your wife and kids are going to shoot you, then place a service call. Calvert will be out right away and get it running lickity-split. You’ll stay out the dog house, but we charge a fee for that.
  • I certainly can’t fix everything over email and I don’t make house calls, so I will not be able to solve every problem. But we might be able to solve yours.
  • You may not possess the tools or instruments to accurately diagnose the problem. If so, we will be stuck at that point.
  • Sorry, but if your address is not in our service area, I am going to pass on you. I can’t help the whole world and would be a fool to try. You’re good if you live in Delaware, Cecil or Kent County, Maryland or Chester and Delaware County, Pennsylvania.
  • If you smell gas, or think you have a carbon monoxide problem, call the fire dept immediately –911.

That being said, I have no intentions of bait-and-switching you into a service call. I just realize that there are lots of folks like me, that are pretty handy outside their field of expertise and could fix things with a little guidance. That’s all this is.

Perhaps your motivation is that you had Calvert or a competitor diagnose your system and you want a second opinion. I can help but don’t tell me who the company is so I can provide unbiased commentary.

What’s in it for me? Hopefully you’ll think of Calvert when it comes time to replace your system or recommend us to a friend that’s having problems. I am throwing out some good vibes hoping I’ll get some back. That’s all Start by emailing me at Chris@calvertcomfort.com. Tell me your first name and address and describe the problem your having. I’ll respond as soon as it’s practical for me. Again, no expectations please— it’s free.


Things your Mom Can Fix

Check the thermostat. Make sure the thermostat is switched into the “Heat” mode for Heat and the “Cool” mode for cooling.

Check the battery in the thermostat. If you have a display, your battery is probably good. Low batteries will flash “replace battery” and dead batteries will not have any display.

Check the switch at the top of the stairs. Not the light switch — the other one. It was put there for safety and sometimes a kid or somebody will turn it off by mistake. It should be in the up or on position.

Check the switch on the side of the heater. It should be in the up position.

Check the breaker in the fuse box. Look carefully because some types of circuit breakers when tripped look like they are on the on position. Push on it a bit, if it’s spongy, turn it off then back on.

Check your air filter and make sure it’s clean. Your furnace can run a couple of days without a filter, but don’t forget replace ASAP or it will cost
you a lot down the road.


Check the gauge on top of your oil tank. If it’s low call Lincoln oil at 995 -4500. Purchase 100 gallons of oil and they will prime your pump for free
if you mention the Calvert website when placing the order.

The Reset Button on Oil Burners is Dangerous! The box under the reset switch is looking for a flame and if one does not appear in 45 seconds the system shuts down. When you push the reset button, the motor starts and you might think it’s working but all you are doing is potentially pumping oil into your heater. Pushed several times, when the heater does finally ignite, you have a roaring inferno inside your heater. Very dangerous. Press the switch one time and call for service.

Gas / Propane

If you have plastic chimney pipes. Go outside and make sure nothing has obstructed the outlet like snow or leaves or perhaps an old wasp’s

If you have plastic chimney pipes. There is a drain hose at the bottom of your furnace that needs to cleaned as part of an annual maintenance.

If you have propane: Check the level of the tank. When was the last time you had a delivery?

Reset the furnace: Turn the power off to the furnace and wait 15 seconds then turn back on. If your furnace starts, it will probably fail again going forward and needs to be tune up and checked. Call for Service.

Heat Pump/AC

Check power to the outdoor unit. In the breaker box, turn off the double breakers then turn them back on.

Check under the indoor unit for water. If the indoor unit leaks there should be a safety device that turns it off. Drain the water and resolve the leak. Probably a clogged drain due to a lack of maintenance.

Check if there is ice on the refrigeration pipes. The pipes that connect the outdoor unit with the blower unit inside. If there is ice on the pipe with the black pipe cover, turn your AC to the off position at the thermostat for 6 hours and let the coil defrost. Afterwards make sure all your vents are open and change the air filter. Turn you system back on but do not set it below 70 degrees. If it ices up again, call for service.