Zinsmeyer Air Conditioning & Heating offers a full line of products for your heating and cooling needs as well as your indoor air quality. Whether you are looking for a whole house heating and cooling system or the ultimate in indoor air quality solutions, rest assured that Zinsmeyer Air Conditioning & Heating will be there in the future, just as we are for our customers today.

What We Do








24/7 Service


Air Quality Solutions

Air Conditioners

Trane air conditioners work more efficiently and quieter to keep you cool and comfortable all year long. Take your home comfort to the next level with variable speed technology that allows our air conditioners to intuitively adjust to your heating and cooling needs.


Trane furnaces are uniquely designed with efficiency and precise temperature control in mind. With one-stage, two-stage and modulating furnaces – there’s a perfect furnace for every home.

Heat Pumps

Trane heat pumps are an air conditioner when things get hot and a heater when it’s cold outside – making Trane heat pumps one versatile product. In addition to its flexibility, many of these heat pumps are also energy-efficient. 

Trane CleanEffects Air Cleaner

Trane CleanEffects™ air cleaner uses revolutionary technology that removes up to 99.98% of airborne particles. You can say goodbye to worrying about breathing in harmful bacteria or allergens in your home.

NEXIA Thermostats (Smart Home Automation)

Thermostats and controls can manage your energy use, adjust the indoor temperature, turn lights on and off, and check your security cameras. They’re more than just digital thermostats – they’re the central hub for your home.

Ductless Systems

Trane ductless systems allow you to create a comfortable indoor environment in spaces where adding ductwork might be impractical. Our easy-to-install ductless systems offer flexibility in design with two components – an outdoor unit and one or more compact indoor units.

Air Scrubber

While air filters work to capture larger airborne contaminants, such as dust and dirt, Air Scrubbers actively clean the air by releasing “air scrubbers” to reduce the amount of volatile organic compounds (VOCs), contaminants, mold, odors, and pollutants in the air and on surfaces. Air Scrubber Plus® not only helps filter the air, it also helps clean, deodorize, and purify the air. 99.99% of surface mold will be eliminated with Air Scrubber Plus® technology.  Instead of using scented air fresheners to mask the unpleasant odors and add chemicals to the air, Air Scrubbers reduce airborne toxins in your home naturally. Whenever you turn on your air conditioner, furnace, or fan, the air scrubbers go to work, cleaning the air and surfaces with air scrubbing technology. If you have pets at home, Air Scrubber Plus® cleans, freshens, and purifies the air, including odor-causing bacteria and odors caused by pets and cooking.


The REME HALO® utilizes RGF’s patent-pending Reflective Electro Magnetic Energy technology. Installed into the supply plenum of the existing air conditioning or heating system air ducts, the REME HALO® produces Hydro-Peroxide plasma that is distributed through the air handler, through the duct system and into the conditioned living space. Unlike passive air technologies, which need pollutants to pass through the unit for purification or filtration, the REME HALO® sweeps through the area actively purifying pollutants at the source. In addition, the charged plasma induces particles to coagulate or stick together making them bigger and easier for your filter to catch. Hydro-Peroxide occur naturally in the earth’s atmosphere and are part of nature’s process of cleaning the air.

Emergency Services

When you have a heating or air conditioning problem that can’t wait for our operating hours, we have technicians on call, 24 hours, 7 days a week, throughout our service areas.

For an emergency service call 830-985-3498 and your call will be dispatched to our on-call technicians. 

After Hours, Emergency Services are available after 5:00 PM and on Saturdays, Sundays.

Business Hours

Monday – Friday

7 a.m. – 5 p.m.

Closed Saturday & Sunday

Financing Options:

Need help paying for your heating and cooling equipment?

Zinsmeyer Air Conditioning & Heating understands that maintaining the comfort of your home can be expensive. That’s why we offer convenient financing options to ease the financial burden for our customers. We believe that it should be possible for every member of our community to receive the heating and cooling services they need regardless of their budget.

Click above to learn about 0% financing with a Wells Fargo Home Projects credit card.

Our Service Promise To You

At Zinsmeyer Air Conditioning & Heating, we guarantee our service! If it’s not fixed right by us on the first call, then we come back at our expense, not yours. (Provided it’s the same problem of course!) Our mission is to take care of you, our customer! GUARANTEED!


Zinsmeyer Air Conditioning & Heating is a licensed dealer through the state of Texas and will guide you with technical and professional support. We also offer affordable, reliable, and necessary maintenance plans for our residential customers.


Highly trained technicians...

who specialize in air conditioning units, heat pumps, furnaces, proper installation, troubleshooting your heating and cooling, and all components of the HVAC speciality.

Knowledgeable technicians...

to properly diagnose your system’s issues so that you can get back to your life.

Our technicians will arrive...

in Zinsmeyer Air Conditioning & Heating uniforms, with verified identification.


Technicians receive ongoing training...

to stay up to date with the most recent products, systems and services and safety concerns.

Our technicians are trustworthy...

friendly, respectful, courteous, and professional.

Our technicians are 100% drug-free...

and have passed a background check.

Read our testimonials of what customers have to say about our technicians. They arrive on time, are courteous and polite and exceptionally thorough. They also ensure they don’t create a mess in your home and take care of the job.

Call us when you need your system fixed.

When you call us for service we are on the move to help resolve your heating or AC problem. Once one of our highly qualified technicians is dispatched to your location, he will perform a diagnostic review of the system. Once the problem has been diagnosed, our technician will explain to you what they found and recommend various solutions that we can provide and a cost quote, prior to the work being done. All repair prices will be established from our upfront, no-risk, no surprise, pricing guide. The price you are quoted is what you will pay! —that’s our guarantee.


Our trucks are fully stocked with components to repair most common air conditioning failures. We service all brands and models, and our technicians are trained on how to repair old and new equipment.

Oh the dilemma of whether to repair or replace?

Some things to think about when considering to repair or replace an air conditioning system:

Is your unit more that 10 years old?

Consider replacing an HVAC unit that is 10 years old with a high-efficiency model that can help to decrease your electric bill and actually pay for themselves over time.

Does your system spread dust in your home?

Dust particles can travel in air ducts and be released throughout your home. This can cause your allergies to make your miserable. Sealing existing ducts or, if the ductwork in your home is in poor condition, replacing your ductwork can be beneficial.

Are some rooms too hot or too cold?

These kinds of problems are usually the result of an improperly engineered system when the home was built or when the last unit was installed. A well-trained technician can diagnose hot/cold spots in your house and determine if the problem is related to the unit’s size (tons), inadequate insulation, improper ductwork or some combination of these.

Is your energy bill high?

Your air conditioning system makes up as much as 60% of your utility bill each month. Older, inefficient systems use more electricity to deliver the same comfort level as current high-efficiency units do.

Does your system need frequent repairs?

This could be a sign that your old unit has reached the end of its life and is just worn out.




Is your heating and cooling system noisy?

Noisy units can be caused by a variety of factors.

Is your system the right size for your home?

A home evaluation can identify the dimensions of your home, window locations, and orientation to the sun, to determine the proper equipment needed to cool your home most efficiently.

If you choose to have a new system installed in your home,

we can help you to determine precisely what your home actually needs to bring you the comfort you deserve in an energy efficient system ~ not just the same size unit that you had before.

Financing Options:

How to pay for your heating & cooling equipment

Zinsmeyer Air Conditioning & Heating understand that maintaining the comfort of your home can be expensive. That’s why we offer convenient financing options to ease the financial burden for our customers. We believe that it should be possible for every member of our community to receive the heating and cooling services they need regardless of their budget.

Learn more about financing your services with a Wells Fargo Home Projects credit card.

Contact Us Today

for all your comfort HVAC Needs

15 + 5 =

2873 US Hwy 90 East, Castroville, TX 78009




Office Business Hours: Mon - Fri 8:00 a.m. - 5:00 p.m.

On-Site Service available 24/7