Change your Filters, TODAY!

A reminder to change your filters!

Merry Christmas2

We have a winter storm coming and if you haven’t recently changed the filter in your furnace, please do so NOW! At the very least your furnace will run more efficiently. A dirty filter may actually cause your furnace to shut down. Louie has made many emergency service calls to find systems that are filthy and filters completely clogged.

A furnace requires air to heat, cold air in the intake is heated and pushed through the duct work. If air cannot enter, the system shuts down. The single most important thing you can do, is change your filter. When you are changing your filter, if you notice the system is extremely dirty, call for service and we will get you scheduled for a cleaning and check the system for you. This will eliminate the need for an emergency call on a weekend, and will help ensure you are warm and comfortable during the holiday! Thank you for your business and referrals.

Merry Christmas, from our family to yours! Louie & Laurie Fesmire



Happy Thanksgiving!


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Fesmire Heating and Air Conditioning would like to thank all of our great customers. Many of you have been with us for so long, it feels like you are family. Many of you are new customers that we look forward to serving for many years to come.

While we may consider you to be like family, we don’t want to see you over the holiday, because your furnace isn’t working. We want to take a moment to encourage you to check your furnace filter. As the cold weather is finally moving into our area, and furnaces are being used for the season, it is important to check the filters and make sure they are clean and allowing air flow. If in doubt, change the filter! Filters are relatively inexpensive and easy to change. A clean filter can increase the efficiency of your system and greatly reduce emergency service calls. So when you pull the turkey out of the freezer to defrost, take a moment to check the filter on your furnace and change it if needed, also check and replace the batteries in your thermostat, then when you sit down to your Thanksgiving dinner, you can be thankful that you are home, warm and safe and your furnace is working at it’s full efficiency.

From Louie and Laurie Fesmire, we wish you a very Happy and warm Thanksgiving, filled with family and friends. thanksgiving-banner

Carbon Monoxide Dangers

When replacing a furnace in our area building codes require us to add smoke and carbon monoxide testers. We are not required to add them when servicing your furnace, however, we highly recommend that you have them, and we will install for you.

Getting Ready for Winter – How to Maintain your Furnace


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I know the weather is still warm and only the skiers are wishing for the snow to start flying.

However, it is not too early to think about your furnace. Colorado weather can change in an instant. The last thing you want is to wake up to a winter storm warning and have your furnace not work. Before winter arrives the best thing you can do for yourself and your family is to make sure your furnace will be ready when the forecast turns cold.
You want to make sure your furnace is operational, safe and energy-efficient. Even if your furnace was fully operational when you shut it down for the summer, a lot can happen to affect your furnace. Bugs, rodents, dust, pollen, cotton from the cottonwood trees and so much more can get into your system and block the air flow or damage the electronics or wiring.
Of course we recommend that you call Fesmire Heating & Air Conditioning to come out and do a routine inspection and start-up. We will clean your pressure switch ports, burners, flame sensor, check your wiring, change or clean your filter and cycle it to make sure everything is working properly. While we are there we can also check your Air Conditioning system and prepare it for winter shut down. In many cases your warranty requires routine maintenance checks on your system every 6 months. If not done it may void the warranty. So this is the perfect time to get everything ready for winter and then this spring get everything ready for summer.
If you want to put off calling in a professional the MOST IMPORTANT thing you need to do to ensure the proper operation and efficiency of your furnace is to change the filter. Even a filter that looks okay may have minute dust particles that may block air flow. Without proper air flow your system cannot work properly and may actually shut down. The 3 rules of real-estate are location, location, location; with that in mind, the 3 rules of furnace maintenance is filters, filters, filters! CHANGE YOUR FILTERS!
I hope that by now it is clear that your furnace filters should be changed regularly. Dirty filters require the furnace to work harder and that can cause undo wear on the motor and cost you real $$$$ due to being less efficient and using more energy. In addition to changing your filters, make sure that your furnace is clear of items that you may have stored around or on it. During the summer months it is easy to set things on top of your furnace or pile things around it. Now is the time to make sure that there are no flammable items around the furnace, or items blocking air flow and access to the furnace.

Armstong Air offers an emailed filter reminder for your convenience, follow the link to sign up.

Time to change the filter


REALLY REALLY Past time to change the filter

Why should my HVAC contractor run superheat on my cooling system?


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Superheat is a test performed on an Air Conditioning system to determine the level of Armstrong airrefrigerant in your system. A study commissioned by Arizona Public Service, an Arizona utility, found that more than 70% of split systems tested were at least 5% low on refrigerant. Low refrigerant charge impacts compressor reliability, as well as efficiency and performance. In mild weather it is difficult to determine the refrigerant levels in a system without the superheat test.

What is superheat?
Superheat refers to the number of degrees a vapor is above its saturation temperature (boiling point) at a particular pressure.

How do I measure superheat?
The best answer is: Call a professional who has the equipment and knowledge to do the test properly.

The more complicated answer is: Superheat is determined by taking the low side pressure gauge reading, converting that pressure to temperature using a PT chart, and then subtracting that temperature from the actual temperature measured (using an accurate thermometer or thermocouple) at the same point the pressure was taken.

Why is it important to know the superheat of a system?
Superheat gives an indication if the amount of refrigerant flowing into the evaporator is appropriate for the load. If the superheat is too high, then not enough refrigerant is being fed resulting in poor refrigeration and excess energy use. If the superheat is too low, then too much refrigerant is being fed possibly resulting in liquid getting back to the compressor and causing compressor damage.

Consequences of an Improper Charge:
An undercharged system: will not only perform poorly with low efficiency, but will also suffer chronic compressor overheating. There must be adequate refrigerant returning to the compressor to carry the compressor motor heat away to be dissipated into the condenser air. Since the compressor is the last component to receive any cooling, it is the first to suffer when the charge is short. Compressor oil breakdown comes with compressor motor overheating. Chronic overheating of the oil degrades it, reducing its ability to lubricate the compressor properly. In severe cases, sludge is formed, which can negatively affect refrigerant controls such as expansion valves, check valves, and reversing valves.
Eventually, a system that is subjected to chronic overheating due to low refrigerant charge will have a major failure usually of the compressor.

An overcharged system: May lower performance and efficiency, overcharging can cause the refrigerant to flood back to the compressor crankcase during start-up, diluting the oil and causing compressor bearing damage. Overcharging can also cause refrigerant to accumulate in the compressor crankcase during the off cycle.                                         An overcharged system, like an undercharged system, will suffer a premature compressor failure if not repaired.

There are many contractors who do not use or understand the importance of the superheat test. It is very difficult to get accurate readings and properly charge your system without this test. I highly recommend that you ask your contractor for a superheat test and if he does not use this method, find another contractor.

Fesmire Heating and Air Conditioning serving Southern Colorado, including Pueblo, Pueblo West, Penrose, Rye, Walsenburg, La Junta and more. Call Louie today! 719-240-5109

Helpful information, we wanted to share


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It is VERY important to change your filters to keep your system working effectively and efficiently, however it is also important to do it correctly. Most filters are actually directional and you will need to determine which way air flows to install them correctly. Follow this link it gives you a How to determine air flow when changing filters.

When replacing filters it is important to keep air flow in mind. Furnace and air conditioning filters are used to keep dust out of your home and  your system. They also help to keep allergens out of your home. Some units have a permanent or washable filter, these need to be cleaned as regularly as you would replace a disposable filter. Disposable filters come in many types and efficiency ratings. Efficiency ratings in filters determine what size of particles are removed from the air. More expensive, higher efficiency filters aren’t always better, most will filter out higher levels of dust and allergens, but that also means they might clog more quickly or cause the HVAC unit to work harder. Some residential systems do not have the fan or motor capacity to run high efficiency filters. Check the US EPA guide to air cleaners for more information on filters.

Call Louie at 719-240-5109

Call Louie at 719-240-5109

Fesmire Heating and Air Conditioning recommends that you keep your filter size in your purse or wallet and clean or replace them monthly.

How to choose a properly sized Air Conditioner: What are BTU & SEER ratings?

The British thermal unit (BTU or Btu) is a traditional unit of energy is equal to the amount of energy needed to cool or heat one pound of water by one degree Fahrenheit. The BTU is most often used as a measure of power (as BTU/h or BTUH) in the power, steam generation, heating, and air conditioning industries.

Tips from

Many people buy an air conditioner that is too large, thinking it will provide better cooling. However, an oversized air conditioner is actually less effective — and wastes energy at the same time. Air conditioners remove both heat and humidity from the air. If the unit is too large, it will cool the room quickly, but only remove some of the humidity. This leaves the room with a damp, clammy feeling. A properly sized unit will remove humidity effectively as it cools.
To figure out which size unit is best for your cooling needs:
Determine the square footage of the area to be cooled

Make any adjustments for the following circumstances:
1. If the room is heavily shaded, reduce capacity by 10 percent.
2. If the room is very sunny, increase capacity by 10 percent.
3. If more than two people regularly occupy the room, add 600 BTUs for each additional person.
4. If the unit is used in a kitchen, increase capacity by 4,000 BTUs.
5. Consider where you install the unit. If you are mounting an air conditioner near the corner of a room, look for a unit that can send the airflow in the right direction.
SEER stands for Seasonal Energy Efficiency Ratio, and is a ratio of the amount of cooling produced (BTU) divided by the amount of electricity (watts) used. The higher the SEER, the greater the air conditioner’s efficiency, older air conditioning systems have a SEER rating of 10 or under.

The SEER rating of a unit is the cooling output during a typical cooling-season divided by the total electric energy input during the same period. The higher the unit’s SEER rating the more energy efficient it is.
Average power = (BTU/h) / (SEER) = 5000 / 10 = 500 W
If your electricity cost is 20¢/kW·h, then your cost per operating hour is:
0.5 kW * 20¢/kW·h = 10¢/h

The last number used in rating an AC unit is Ton. A 4 Ton unit, does not weigh 4 Tons. It’s a number that tells how much heat the air conditioner can remove from the house in an hour. A 4 ton air conditioner is one that can remove 48,000 BTUs of heat per hour from the house. For most people, though, 4 tons means 8000 pounds (refer back to BTU) For more great information check out Energy Vanguard‘s blog.

When considering new Heating or Air Conditioning equipment: it is important to consider not only efficiency but overall cost. The higher the efficiency of the unit, the lower the cost to operate the unit; however the initial cost is higher.

It is important to consider many variables in choosing the proper unit for your circumstances, Fesmire Heating and Air Conditioning is here to help you determine the best unit for your needs in Southern Colorado. Call Louie at 719-240-5109

Honeywell Refrigerant Information


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This is taken directly from Honeywell

Honeywell Solstice® Refrigerant Blends Approved by Emerson
Did you know? Emerson has approved Solstice® refrigerant blends for its Discus and Copeland Scroll compressors. Click here to see Emerson’s performance ratings for Solstice N40 (R448A) and Solstice N13 (R450A).

Features and Benefits of New Solstice Refrigerants Blends

The superior energy efficiency of Honeywell Solstice N40 makes it a clear winner compared to R404A for supermarket refrigeration. Solstice N40 is the lowest GWP / A1 refrigerant replacement for R-404A / R-22 available.

Solstice N40 (R448A) Features and Benefits

  • Replaces R404A in low- and medium-temp refrigeration applications
  • GWP of 1273 is 68% lower than R404A
  • 5-10% more efficient than R404A
  • Near drop-in replacement for R404A
  • Nonflammable (ASHRAE A1)
  • ASHRAE designation R448A

Honeywell Solstice N13 is an HFO blend for chillers, and can also be used in medium-temperature applications such as supermarket display cases and self-contained refrigeration units that require a non-flammable refrigerant solution. Solstice N13 is designed to replace R134a and offers a GWP that is 60 percent lower than the GWP of R134a.
Solstice N13 (R450A) Features and Benefits

  • U.S. EPA SNAP-listed
  • Replaces HFC-134a in medium temperature systems
  • GWP of 547 is 60% lower than R134a
  • 88-90% capacity with similar efficiency (101-103%)
  • Small glide (0.4°C) can be addressed during system design
  • Nonflammable (ASHRAE A1)
  • ASHRAE designation R450A

Visit for complete information about all Honeywell Refrigerant products.

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