How to Look

at a House


A blog with answers
to your questions about
HOME INSPECTION
and HOME MAINTENANCE


More blog posts about heating and air conditioning:

  1. The coils on my heat pump are covered with ice on cold mornings. What’s wrong with it?

  2. How much will I save on my utility bill if I get a new higher SEER air conditioner?

  3. What is an HVAC system?

  4. My air conditioner won’t turn on. What’s wrong?

  5. How do I find the right size air conditioner for my house?

  6. What is a “ton” of air conditioning?

  7. The coolant line to the outside unit of my air conditioner is frozen. What's wrong?

  8. What does an ultraviolet air treatment system do?

  9. What is causing a foggy haze on my windows?

  10. What is a geothermal heat pump?

  11. What is the SEER of my old air conditioner?

  12. What size air conditioner is right for my mobile home?

  13. What does the “AFUE” rating of a furnace mean?

  14. How much life is left in that air conditioner?

  15. Why is there mold around the air conditioning ducts?

  16. What does the MERV rating number on an air conditioner filter mean?

  17. What is the difference between the SEER and EER rating of an air conditioner?

  18. Is it alright to close the air conditioning vents in unused rooms?

  19. Why is my air conditioner running constantly?

  20. What is the difference between a heat pump and a cooling air conditioner?

  21. What is the right MERV number for my air conditioning filter?

  22. Should I move the air conditioner into the attic?

  23. What is an air conditioning heat recovery system?

  24. What is the best air conditioner for a mobile home?

  25. What is the average lifespan of an air conditioner?

  26. When should I switch the thermostat to “EMERGENCY HEAT” for my heat pump air conditioner?

  27. Why does the air conditioner condensate drain line need a trap in it?

  28. Should I remove an old whole house fan or keep it?

  29. What is a jump duct?

  30. My air conditioner won’t turn on What’s wrong?

  31. What is the purpose of the vent grille over the bedroom door?

  32. Should I have a return air vent in the master bedroom?

  33. Will closing doors reduce my heating and cooling costs?

  34. Why is there a wall switch next to the furnace or indoor unit of the air conditioner in the garage?

  35. What are the most common problems with wall/window air conditioners?

  36. Which one is better for a home heating system: electric or natural gas?

  37. Why is my air conditioner not cooling enough?

  38. What is a return air plenum for a furnace or air conditioning system?

  39. When is an auxiliary drain pan required under an air conditioner indoor unit (air handler)?

  40. Why does it take so long to cool a house when the air conditioner has been off for a while?

  41. What are the right words to use when talking about a heating and air conditioning system?

  42. What is a ductless mini-split air conditioner?

  43. What is a FanRecycler and AirCycler?

  44. Why is my bathroom vent fan not exhausting enough air?

  45. Why has the thermostat screen gone blank?

Welcome to our blog!
We want you to be an informed homebuyer, and each blog post is a question that we have answered for our friends and customers over the years. Hope they help you make a good choice for your next home.

These prices should only be used as a guide only, and the actual quote you receive form a local contractor may be lower or higher. You should receive a written proposal from a licensed HVAC contractor before making any decisions about buying or remodeling a house with an older HVAC system. Here’s just a few of the many things that will change the pricing:

  1. BulletInstallation of air handler in an attic, or any location that requires a catch pan under unit and more difficult access.

  2. BulletHigher SEER rating than 14.

  3. BulletRelocation of condensing unit or air handler.

  4. BulletChange in pricing of raw materials, such as copper, for the manufacturer.

  5. BulletHow competitive the local market is.

  6. BulletAny necessary repair to existing ducts or walls

  7. BulletReplacement of registers.


While we hope you find this series of articles about home inspection helpful, they should not be considered an alternative to an actual home inspection by a local inspector. Also, construction standards vary in different parts of the country and it is possible that important issues related to your area may not be covered here.
©2015 - McGarry and Madsen Inspection.

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