You don't have to call in an air conditioning technician in Houston, Texas immediately for what could just be a minor problem. You should check the air filter first if it is dirty.  If the thermostat is set to cool and the temperature in the room isn't dropping, there could be ice build-up on the Evaporator Coil due to low airflow from the dirty air filter. It will defrost the evaporator coil faster if you turn the thermostat fan switch from auto to on. Check to make sure you have some airflow, then in one-hour re-check it, you should have more airflow, if you do, let it run on the fan for two more hours, then turn the thermostat back to auto and go back to cooling. However, you should still have it serviced.

A national account provider called us to look at a problem at an auto parts store in Richmond Texas, which was having a problem with their hvac systems. The company that installed the Gridpoint HVAC Energy Management System used thermostat wire instead of twisted shielded cable causing interference with the sensors. We came in and removed 800 feet of thermostat wire and installed the shielded cable as per the specifications on the blueprint. This resolved the problem the auto parts store was having.

These products are used in systems that are leaking refrigerant. The manufactures of these products say they do no harm to the system, but air conditioning systems consist of metering devices that may be fixed piston type or expansion valve type. Pistons have metering bore holes. And they have screens in the fitting that catches debris that may have been missed by the filter dryer.

We serviced two gas furnaces in the attic in Cypress, Texas, before the heating season started. We found the gas vent exhaust pipe disconnected in the attic, without this furnace inspection it would have been venting carbon monoxide into the customer’s attic. Please have your gas furnace checked out before you use it. Hope this helps.

We were called out to a house in Katy Texas, because a gas furnace was not operating right. We check out the furnace and it was kicking out on the high limit safety. We quickly diagnosed it as an air flow issue. We checked the air filters to make sure they were clean. Then we checked the static pressure and it was (1.10). The flex duct came from the return into the back end of the furnace. We recommended to the customer to add a plenum on the back end of the furnace giving us the space we needed to add a new return and tie in the existing return. We messured the static pressure and it was (.10). We checked the operation of the gas furnace and now it was not kicking out on high limit safety. More information on air flow can be found on my Air Flow Blog article.

Here is why: Most home inspection services only look at the HVAC system. They will write down the model numbers and serial numbers and run the system. They will check the return temperature while it's running and the supply air temperature and tell you what the difference is in the temperature. They will only notice obvious signs. An a/c contractor should take a static pressure reading, this will tell them about the duct work ie: too small of a return air and supply air duct issues.

In the Katy, Cinco Ranch, and Cypress areas of Texas we are finding gas furnaces installed vertically in attics. This type of installation should be avoided and here is why: Gas furnaces nowadays are more compact than ever. The airflow goes in the furnace through the side when installed vertically and in the bottom when installed horizontally. This is the best way to install it, and here is why: When you install a furnace vertically because of its size you are limited to the opening. The manufacturer's installation instrutions show that they want you to use a square opening not less than the recommended size. If you use sheet metal duct work with a liner you will loose a total of three inches on the four sides of the inside of the duct. Sheet metal wrapped with insulation on the outside does not reduce the inside dimensions.

When making repairs on A/C equipment here is why you should use OEM (Original Equipment Manufacturing) parts. Evaporator motors now days are using X13 and ECM (Electronically Commutated Motors). These motors are engineered and are factory preset for specific air volume. The manufactures have designed them for use in their equipment (gas furnaces and air handlers). This is why you need to replace that motor with the part that the manufacturer has designed for that equipment. Two stage gas furnaces use a variable speed draft blower motor which operates low and high, which draw combustion gases through the heat exchanger to maximize heating efficiency.