My Furnace Stopped Working!

Furnace Problems?

You wake up in the middle of the night shivering cold. Throwing the blankets aside you rush to the thermostat only to find the set temperature is 70 but your house is now below 60! The


furnace is either not running or blowing cold air.

But before you go call an HVAC company and spend hundreds of dollars for emergency hours fees, how about taking a minute to figure out what might be wrong with the furnace?

Here’s a little article I wrote today about some furnace diagnostics. It may help you know if the HVAC person who comes to your house actually knows what he is doing. this can save you a lot of time and money.

Read More…


My Air Conditioner is Leaking

So how many times have I heard this phrase this year. Or “I just have my AC guy top off my air conditioner every year with about a pound of Freon”.  Well I have heard that over and over. One homeowner even boasted he was an engineer telling me that it was just a pinhole leak and his power bills have been constant over the last 5 years. That is highly doubtful and even if true does not take into account scientific results of other environmental factors preventing a proven cause-effect relationship. He didn’t want to listen when I explained that leaks get worse over time. So if you are reading this dude, get a grip. If you are a good engineer, then you should know that you need data to back up your obviously emotional claim.

Here is an article that highlights a scientific study by the Trane Corporation that found the root cause for most copper coil leaks: Formic Acid. And yes, Virginia, there is a Santa Clause, and the leak does get worse over time.

In this article it explains that formic acid is etching the copper coils creating those pinhole leaks and that they continue to grow with time.  There is no one solution to these leaks, but rather points to the new industry initiatives to replace copper coils with aluminum coils. Replacing the coil is the only 100% sure fire solution to fix a leak. However it is expensive. And for some people, if there are less costly alternatives, then they want to be presented with them so they can delay the replacement until they can raise the funds.

Some leak seal treatments address this erosion problem without creating a risk to the major motors and valves. However other leak stop products are more of a jell that can coagulate on the motors and valves creating further damage to the system.

Alexander Heating and Air Conditioning only uses products that we trust not to harm your system and may actually protect your investment.


Call us today 919-886-HVAC or visit our web site at


Time for your Air Conditioner Tune Up

Want to save money on those air conditioning bills this summer? How about helping to prolong the life of your air conditioner? Maybe you are concerned about your compressor dying? Well an air conditioner tune up can help prevent some of the most expensive repairs and lower your energy bill at the same time.  Read More…


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Why You Need an Air Conditioner Tune-up

image of guy with fanIt is springtime again in Raleigh North Carolina and people are just now starting to turn on their air conditioners for the first time. Most air conditioners have been sitting idle through the winter and probably have not been checked for several months. Through the winter, the condensing units have been exposed to adverse weather conditions, clumsy landscapers, dust and pollen, dirt from construction sites, road salts from the traffic, dirty air filters, and much more. All these environmental conditions have a significant impact on the operation and life of your equipment.

The #1 cause for air conditioner failures is compressor burn out. All the dirt, pollen, dust, leaves, and landscaping mulch can build up on the outside coils and cause the compressor to overheat. When a compressor operates at elevated temperatures, the oils inside begin to breakdown and stop lubricating the compressor parts. Then the friction build up elevates the temperatures even more and soon your compressor will stop functioning.

It is Time for Your Air Conditioner Tune-up Today

Alexander Heating and Air Conditioning offers our Spring Tune-up services that will clean your coils, check all your components that wear out with age, and notify you if you need any Freon added. Our Tune-up will give you the peace of mind that your system is in the best shape possible to prepare for the upcoming summer. Don’t wait for your system to breakdown during the busiest part of the season. And during the summer months, most companies are backed up with calls and will cause you to wait several days for a repair. Don’t be stuck without your air conditioning this summer. Call us today.