HVAC, Plumbing & Electrical Services in Keller, TX

Professional HVAC, plumbing, and electrical services for Keller homeowners. Licensed, insured, and trusted since 2004.

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Why Keller Homeowners Choose LEX

25-35 min Response

Fast response times to Argyle from our Plano headquarters.

Family-Owned

Three generations of honest work since 2004. Proudly serving our community

Licensed & Insured

Fully licensed, bonded, and background-checked technicians.

2,500+ Reviews

4.8-star average across Google, Facebook, and Yelp. Contact us today!

Keeping Your Family Comfortable Is What We Do Best

Looking for a reliable HVAC company? Your search ends here. Since opening our doors over 30 years ago, our team at Lex Air Conditioning and Heating has remained committed to offering the most dependable and affordable heating and cooling services throughout Keller and the surrounding regions. We understand the importance of keeping your family comfortable, which is why you can always count on us to deliver high-quality workmanship and get the job done right the first time with our great service and years of heating/cooling expertise.

What Are Ductless Mini-Split Systems?

Ductless mini-split systemsalso known as single-zone ductless systems, operate without the use of air ducts. A typical air conditioner uses a single unit to disperse air around the house. Only a single room or area will be served by a mini-split indoor unit, as each unit has its own fan and evaporator coil. Lex Air not only knows the best circumstances that suit these types of units but also which particular ductless mini-split system will suit your needs. Ductless mini-split air conditioning units are a wonderful alternative to building a separate heating and cooling system for additions or refurbished space and require little to no maintenance or are easy for replacement. Our HVAC professionals at Lex Air Conditioning and Heating can provide you with a variety of installation alternatives as well as great service, quality work, and excellent customer service for all your Keller heating and air conditioning needs.

Where is a Mini Split Air Conditioner System Best Suited And Why?

Mini-split ductless air conditioners may be used in a variety of household settings, but perhaps the most prevalent use is in multi-family homes when modest apartments or room extensions are still being built. This type of air conditioning unit is suitable for basements, man caves, or mother-in-law suite extensions, or when expanding or adding air distribution ducting is not possible for either heating or cooling purposes. 

Mini-splits include two primary components, similar to traditional central systems: an external condenser (which houses the compressor) and an internal air handler unit. The outdoor unit half and interior half of the unit are connected by power, refrigerant tubing, suction tubing, and a condensate drain. For home owners who want to make these sorts of additions to their home, we urge your to use our premier HVAC maintenance company located right here in Keller, Texas. Our service company professionals are well educated and knowledgeable on the complexities of all ductless mini split systems. 

With excellent service, 24/7 emergency repair, and professional dedication to make both your equipment and home comfortable and efficient on its utility bills, Lex Air is your best choice for heating/cooling services in Keller, TX. We truly care about our customers, their homes, lives, families, and comfort. Call now at (972) 217-8955 to get an installation or replacement estimate so you can get back to comfortable living.

Pros of Mini-Split Systems

  • They are compact in size and offer a great deal of versatility when it comes to good heating and cooling of particular rooms.
  • Units can be divided into zones with what are called multi-zone ductless systems. Some variants include up to four interior air handling units linked to a single outside air conditioner unit. Because every area would have its own thermostat,  heating or cooling would only be necessary when it is inhabited, conserving energy and utility bill costs.
  • When it comes to AC installation, mini-split systems are often much simpler to install than an American standard central air conditioner or HVAC system. The conduit for the connection among the outside and inside units simply has to be drilled into a three-inch hole in the wall. As a result of the easy set up, this unit system is great for cooling a basement.
  • Because they don’t have ductwork, they don’t lose as much power as forced air systems.
  • Mini-split systems are more flexible in terms of architectural spaces than other “add-on” solutions. They can be put on a wall, hung from the ceiling, or placed level against a drop ceiling.
  • Added security is a byproduct benefit of mini-split systems. For instance, trespassers may easily enter through window unit AC installation, while with ductless mini spits, only a tiny hole in the wall is needed for AC installation.
  • The Trane ductless indoor units come with the “Auto Clean” option. Triple filtration eliminates moisture and ensures that the air you breathe is pristine.
  • Because energy is no longer wasted through inadequately insulated ducting, it is far more energy-efficient.

Cons of Mini-Split Systems

  • Mini-split setups are roughly 30% more expensive than standard air conditioner cooling systems.
  • Technicians need to accurately estimate each interior unit and assess the ideal place for its placement, which requires calculations by a reputable professional. Short-cycling is a common effect of oversized or poorly positioned air-handlers, which wastes power and therefore does not offer appropriate temperature and humidity management.
  • Some people dislike how these units look in their homes.

Commercial Ductless Mini Splits

Mini split systems are not limited to only home owners. Numerous commercial constructions can benefit from mini-split systems, as well. They provide localized heating/cooling that is free from the central system, providing efficient and cost-effective management for just those zones which are engaged. Every office could enjoy its own temperature regulation using a mini-split zone system. Just think – no more staff arguments about thermostat settings. 

Our replacement, maintenance, and installation services are available 24/7. Choose Lex Air to experience excellent service for any of your heating/cooling needs, with fair pricing and quality results guaranteed.

Signs You Need to Repair Your AC

Whether due to extensive use, a lack of maintenance, or other circumstances, AC repair is inevitable. Even problems that appear to be very minor should be inspected by a qualified professional right away to prevent further damage.

Signs That You Need Air Conditioning Repair in Keller, TX Include:

In our decades of service experience, we have encountered and resolved every kind of AC problem under the sun, and we guarantee we have a solution for yours as well. Using high-quality tools and technology, we will have your system back up and running in no time!

Why Keller Homeowners Choose LEX

22+ Years Experience

Family-owned and operated since 2004, proudly serving our community.

Fast Response Times

Based in Plano, we serve with 35-50 minutes typical response.

Flexible Financing

Multiple financing options available. 0% financing for qualified buyers.

Licensed & Insured

Fully licensed electricians, HVAC, and plumbers. All work permitted.

100% Satisfaction Guaranteed

We stand behind our work with a complete satisfaction guarantee.

Local Family Business

LEX is a local family business serving the DFW area.

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At Lex Air Conditioning, Heating, Plumbing & Electrical, we are committed to ensuring that individuals with disabilities enjoy full access to our websites. In recognition of this commitment, we are in the process of making modifications to increase the accessibility and usability of this website, using the relevant portions of the Web Content Accessibility Guidelines 2.0 (WCAG 2.0) as our standard. Please be aware that our efforts are ongoing. If at any time you have difficulty using this website or with a particular web page or function on this site, please contact us by phone at (972) 430-8303; or email us at ([email protected]) and place “Web Content Accessibility (ADA)” in the subject heading and we will make all reasonable efforts to assist you.