O&N Cooling n' Heating
(832) 480-3958

Houston HVAC · Licensed technicians

Comfort you can count on, and a system that tells you when something's off.

O&N Cooling and Heating repairs, maintains and installs A/C and heating systems across the Houston area. With OnCooling Cloud, we can also watch over your system around the clock and catch problems before they become breakdowns.

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  • You always talk to a technician
  • No hidden charges
  • English & Spanish

Main floor A/C

Running normally · cooling

Supply air
56°F
Return air
75°F
Temp. split
19°F
Power draw
3.4kW

✓ Efficiency within its normal range this week

Illustrative example of an OnCooling Cloud system view. Not live data.

What we do

What can we do for you?

Technician cleaning an outdoor A/C condenser coil

Maintenance & repair

A/C systems work by moving heat. Over time both the indoor and outdoor units get dirty, efficiency drops sharply, your electric bill climbs and costly failures become more likely. Regular maintenance and fast, honest repairs keep that from happening.

New split-system air handler and outdoor condenser

Upgrades & installs

Like any equipment near the end of its life, an aging A/C becomes inefficient and every repair costs more. When it's time to replace it, we'll help you choose the right system at one of the most competitive prices in the market.

UV germicidal lamp installed inside an evaporator coil

UV germicidal systems

Ultraviolet light is well known for destroying viruses, mold and bacteria. A UV system installed in your home or business keeps the air cleaner and helps your A/C coil stay clean and efficient.

OnCooling Cloud

24/7 smart monitoring for your A/C

Small sensors on your indoor and outdoor units report how your system is really performing. Our platform analyzes that data around the clock and lets you and our team know when something needs attention.

Real-time readings

Supply and return air temperature, static pressure and electrical power, measured directly at the equipment.

Automatic diagnostics

The system compares each cycle with your own equipment's baseline and the outdoor weather to spot real problems, not false alarms.

Alerts on your phone

Install the app on your phone and get a notification when your system needs attention, often before you'd notice any change in comfort.

Weekly & monthly reports

Plain-language reports on efficiency, energy use against the weather, and how your system behaved, plus thermostat suggestions that can lower your bill.

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Good to know

What you need to know

Efficiency tips

In Texas, A/C typically accounts for 17% to 27% of the electric bill when the equipment is working properly. A few habits keep you within that range and extend the life of your system:

  • Keep air filters clean.
  • Seal air leaks around doors and windows.
  • Schedule preventive maintenance at least once a year.
  • Set the thermostat to the temperature you actually want. Setting it much lower won't cool the house any faster.

When should you call?

Some signs that something isn't right with your A/C:

  • It never cycles on and off.
  • You feel humidity in the house or around the vents.
  • It can't get the house down to 75 °F.
  • Too much water is coming out of the drain.
  • You see ice on the outdoor unit or the refrigerant lines.

Why call us?

  • Our team is made up of trained HVAC technicians registered with the state. You can always ask to see any technician's license.
  • Your call is always routed to an available technician. You'll always speak with a technician.
  • Our structure lets us offer competitive prices, and sometimes beat other offers.
  • No hidden charges, ever.
  • Our goal is your complete satisfaction.

Contact

Let's talk about your system

Call us, email us, or send a message and we'll get back to you shortly. A technician will always help you in the language you prefer.

Send us a message