A recent A/C repair job took us to Irving, TX
A recent A/C repair job took us to Irving, TX
Lex Air Conditioning and Heating is a family owned and operated Heating, Ventilation, and Air Conditioning (HVAC) company based in Carrollton, TX.
Cory and Anthony Contreras are Co-Owners and have provided reliable HVAC services for over twenty years, first learning the craft from their father. The brothers and a team of contractors now serve residents and light commercial businesses from a central office right off I-35, allowing for fast service to all of Dallas.
Same-day home and business installation, replacement, maintenance and repair of all major air conditioning, furnace, air handler, and heat pump brands is available throughout our service areas.
Whether you are in need of emergency furnace repair or just want to schedule routine maintenance, licensed heating and A/C technicians will travel to your home anywhere within the Dallas Fort-Worth Metroplex to solve any residential HVAC needs.
We promise that a residential comfort system properly serviced and maintained by Lex Air will bring the following to your family and household:
I am one happy customer! I left a voicemail at 5:15pm on a Friday and within 3 hours my problem was resolved! Mind you it’s 103 degrees today & the first company I called said they’d be out around midnight!
Anthony helped us install a new heater & air conditioner in our home in Carrollton, TX . They did a phenomenal job from beginning to end.
What do you do when your heat goes out? ON NEW YEAR’S EVE!!! I called Lex Air and they showed up promptly to solve the problem! Thanks for keeping us warm!
February 25, 2015 in Heating
December 22, 2014 in Heating
As winter approaches, gas and electric furnace maintenance becomes a priority. Many of us are worried about reports that this year will be a record breaker, and several places in the U.S. have already recorded their earliest snowfall in decades. We have already had winter storms that have shocked the Northeast with their ferocity, taxing oil burning furnaces to the max. With this harsh winter looming, we turn our attention to our furnaces. In Dallas, there are not many oil furnaces. Most people have gas or electric units in their homes and businesses. Here are some pointers on how to maintain your gas and electric furnaces, and a comparison of the two different types of units.
Both gas and electric furnaces need regular maintenance. Regular maintenance will not only keep the units operating efficiently, it will extend the life of your unit. A poorly maintained unit will not only fail to heat your house properly, it can be inefficient and possibly even dangerous. Both styles of unit can be a fire hazard, and gas units produce combustion products that must be safely and properly vented out of the structure. We recommend, as do many other contractors and publications (, that you should service your furnace every year. It is not very expensive, and it can save you money in the long run. Professional services are recommended.
A gas furnace that properly fires and is supplied with enough combustion air will produce water and carbon dioxide, which is then vented outside. A lack of fresh combustion air will cause incomplete combustion and carbon monoxide will be produced instead, leading to a possibly dangerous condition in your home. A carbon monoxide detector and visual signs of backdraft and corrosion should give your contractor some clues as to whether your gas furnace has sufficient combustion air supplied to it. A vent pipe is used to carry the products of combustion outside. The pipe should be checked for cracks or leaks. It should be sealed properly to prevent any gases from entering the living space. It should also never come into contact with any combustible materials such as wood. This would be a potential fire hazard.
Once combustion air and proper venting are verified, we can turn our attention to the furnace itself. Common maintenance tasks include cleaning the combustion chamber and burner orifices, measuring voltages and amp draws, checking motors and capacitors, ensuring proper operation of the ignition components, cleaning the flame sensor, and checking all safety switches and gas valve operation. Many of these checks can be done visually and audibly, while others require the use of specialized tools such as multimeters. Most of these particular maintenance tasks are exclusive to gas furnaces.
Gas and electric furnaces both use a blower that is powered by a small motor. This blower motor moves air across the gas heat exchanger or electric heat strip. This motor is what distributes warm air through the duct system and into the building. The motor bearings can be checked manually and a multimeter is used to check for over amping issues and also electrical winding conditions. Safety switches are present in both types of furnaces to disable the heat when the motor goes out. That is one reason it is so important to check the operation of safety switches during routine maintenance. A gas furnace that continues to fire without the air moving across the heat exchanger would eventually overheat and start a fire. A clean air filter is also extremely important for safety, proper operation, and indoor air quality.
In neighborhoods without a natural gas supply, electric heat is necessary to heat a building. In areas with mild winter temperatures, such as North Texas, heat pumps can be paired with electric heat. Heat pumps are more efficient than electric furnaces until the outdoor temperature starts dropping below 40 degrees. At this point, it is more economical to run only electric heat.
Although the cost to operate a gas furnace is much less than straight electric heat, there are less moving parts in an electric furnace and they are generally quieter than their gas counterparts. This quiet operation is usually a plus for homeowners, and is attributed to having a burner that doesn’t ignite, with no open flame. Electric Furnaces heat the home by forcing air across coils heated electrically. There is no chance for carbon monoxide emission or any other combustion products.
A trained and qualified technician should maintain electric furnaces as well. Whereas gas furnaces use 120V power, electric heat usually requires 208/230V power and includes many electrical components. Understanding of technical wiring diagrams is also necessary. It is a good idea to pull and clean electric heat strips before turning them on for the first time every year. Dust and debris can accumulate on the coils and cause an electrical short and damage the coils. Continuity of coils should also be checked before turning on the heat. If a coil is broken and power is applied to it, more damage could be done to the other coils and other components. Some other important checks are wires and wire connections. Electric heat wires can weaken and become brittle as a result of excess heat and/or loose wire connections, and may need replacing. For this reason all wire connections should be checked for tightness and corrected if a problem is found. Loose wire connections always lead to burnt wires, which can lead to a home fire under the right conditions.
Just like a gas furnace, there are multiple electrical switches and safety devices that need to be checked out as well, along with the blower motor and motor run capacitor. An experienced technician will also check breaker sizes and incoming power wire sizes. Not all installations are done properly, and many times breakers and wire sizes are too small or too large from the first day a system is installed.
Gas furnaces will provide heat at a lower cost to the homeowner because natural gas is cheaper than electricity, at the moment. However, homeowners without natural gas supplied to their neighborhood, do not have a choice. They must use electricity to heat their home. The cost of installation is roughly the same between the two styles of heaters and so is the cost of annual maintenance. Regardless of style, if your furnace is properly maintained annually your house will be warm, your family and belongings will be safer, and your furnace will function properly for many years to come.
The cold weather came quickly this year, even for Dallas, TX. With our first freezing temperature hitting in early November, we are 10 days ahead of the normal schedule. The cold temperatures are expected to last through the week before warming back up for the rest of November. So take this week as a training exercise for the long term, cold spell we will face in December.
Turning on the furnace for the first time in Dallas, can cause more problems than turning on the A/C for the first time. This is because we rarely use our furnaces compared to other parts of the country. With fewer months of use, that means our furnaces sit for a lot longer and can face bigger problems with initial use. Follow the steps below to ensure your furnace will work well for the few cold months in Texas.
The hot weather of Dallas means our furnaces collect dust, literally, most of the year. Cleaning the air filter or even (replacing it) should be done especially at the start of the season. Every 3 to 4 months is recommended, but for those of us in Dallas, replacing it once at the start of the cold season can be done. Air filters are cheap and well worth it compared to cleaning a filter by hand.
According to FEMA, heating is second only to cooking as the leading cause of residential fires in cold months. You will likely smell a burning scent, while this is normally caused by dust and lint blocking the air filter, it could lead to a fire. It should only last for a few hours, if the furnace smells every time you turn it on, it’s likely a more severe issue with the air filter. It could also be a toy dropped in the heat exchange or items near the furnace. Always be sure to remove any items touching or close to the furnace to avoid a fire.
The two main problems of a furnace are not producing any heat or not enough heat. While the cause could be minor, it might also require a heating expert. First check that the thermostat is on heat and working and set to a warm temperature. It’s best to allow the home to warm slowly, rather than crank it up in a rapid amount of time. Second, confirm the circuit isn’t tripped, something that can happen if you have a high load near the furnace. Finally, check the air filters, if the problem still persists it could be a more serious problem that deserves a technician.
October 2, 2014 in Air Conditioning
No question about it, Dallas is hot in the summer, fall and spring. But you can only hide in your air-conditioned home for so long before you get bored. Venture out and try something new.
When the going gets hot, the smart get wet. That’s why Dallas has so many water parks. Bahama Beach Family Waterpark, 10 miles south of downtown, is the perfect choice for a group with different levels of thrill seeking. More sedentary visitors tube down the Calypso Cooler Lazy River. Adrenaline junkies plunge down the Riptide Slide and the Bahama Bullet. Entertaining a group of little ones? Bedford Splash has tot-accessible features like the beached boat slide and small bubbling fountains to play in. And every September there’s even a chance to bring the family dog. The annual Dog Splash Day welcomes an onslaught of canines to this small park between Dallas and Fort Worth.
Everybody knows snow cones and ice cream are summer staples. But maybe it’s time to up your frozen treat game. Visit India – okay, Carrollton via Agha Juice – and sample smoothies, fruit juices and ultra-rich homemade kulfi, which is Indian ice cream. You’ll definitely encounter flavors you never see in the grocery store aisle. Cutting back on dairy? Swing by Central Market and pick up a pint of Savoy Sorbet. Flavors include clove, hibiscus flower and lavender.
Is your yacht in the shop for repairs? No worries. You can still enjoy some time on Lake Lewisville. JT’s Boat Rentals offers wine cruises, party cruises and even an on-lake nightclub with flashing lights and pounding music. Bring your own picnic dinner for the weekly adults-only sunset cruise. Want the whole boat for you and yours? Charter a 26’, 40’ or 50’ boat for your special occasion.
Bowling has gone upscale from its blue collar roots, at least in places like Splitsville. The Fairview bowling alley combines a vintage aesthetic with modern amenities. Sure, you can get pizza, nachos and sliders while you bowl. But what about the bowler who hungers for sushi? This is the alley where you can satisfy your urge for a crab Rangoon roll complete with water chestnuts and Thai chili sauce. Book online to reserve a lane. And if you go on Tuesday, bowl for two bucks per game per person.
Having a hot summer at home with a fussy baby? Enjoy the A/C during a Cry Baby matinee at Angelika Film Center & Café. On early Tuesday and Wednesday afternoons, join other stir crazy parents and their offspring for a child-friendly film. Children under five get in free. At other times of the day, enjoy independent and specialty films at this 8-screen theater. You can wash down your popcorn with espresso, beer or wine.