Wi-Fi Thermostats

Wi-Fi Thermostats in Manassas, VA

Millions of homeowners operate central HVAC systems when no one is home—or heat and cool spaces that are rarely occupied. At Parrish Services, we help customers eliminate energy waste and combat bloated utility bills. Smart thermostats enable residents to fine-tune their AC and heating systems while saving money and achieving “just right” indoor comfort. And with programmable Wi-Fi technology, you can manage home climate from your handy companion app or mobile browser.

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Man Setting Up A Thermostat

Set & Forget Traditional Thermostats


To maintain consistent indoor temperatures, heating and cooling systems rely on accurately calibrated thermostats. Thermostats respond to shifting ambient temperatures and activate HVAC equipment to restore a home’s preset comfort point. For optimal results, AC and heating systems must be sized and placed correctly, based on a home’s square footage, footprint and other factors. Correctly sized heaters and air conditioners deliver consistent temperature control without the need for frequent thermostat changes.

When equipment is undersized or oversized, it may result in temperature inconsistencies, humidity imbalances and the need to frequently adjust the thermostat. Frequent thermostat adjustments may also cause HVAC components to wear down prematurely. Whenever possible, it is best to “set and forget” your non-programmable thermostat.

Thermostat Services by Parrish


Parrish Services’ certified technicians calibrate central air thermostats when they arrive for your annual Priority Service Plan checkup. With routine, professional maintenance from the Parrish pros, your home’s indoor climate equipment receives the care it needs to perform reliably, year after year.

Time for a new thermostat? Ask a Parrish Services technician to install a smart device during your next visit. Today’s Wi-Fi thermostat models “learn” your comfort preferences and include features like remote climate management, energy reporting, indoor air quality tracking, zoned temperature control and more.

A Parrish Priority Service Plan gives you time to focus on the important things, like family and friends, business and professional goals or self-care activities. Go beyond the HVAC system: Ask technicians about maintenance plans for all of your home’s mechanical equipment. Before long, you’ll swap those daunting weekend chores for no-hassle comfort and peace of mind. Call (571)-650-1016 to sign up for a Priority Service Plan now.

Woman Adjusting Thermostat

Five Advantages of Wi-Fi “Smart” Thermostats

  • Wi-Fi thermostats are intuitively programmed and easily adjusted on the fly. Change your home’s temperature from near or far with a handy companion app or quick browser login.
  • Smart temperature control lets you adjust indoor climate from anywhere. When summer days are warmer than usual, use your smartphone to lower the thermostat a few degrees before you get home. 
  • Do you travel during the winter months? With Wi-Fi thermostats, you can monitor home furnace function and keep an eye out for carbon monoxide leaks or signs of a heating breakdown.
  • Smart thermostats alert you to central air conditioning problems, like dirty filters, low refrigerant or clogged evaporator coils. With your thermostat app, you’ll always have the information you need—so you can react before an emergency arises.
  • Set Wi-Fi thermostats to create the ideal indoor climate for all occupants, regardless of schedules. Create one temperature profile for workdays and another for weekends, overnights and holidays. Program your thermostat based on family living patterns—or create a custom schedule for each occupant.
  • Track energy use over time. With today’s robust thermostat technology, you can track daily and monthly energy use, create reports, set up “zones” for cooling and heating, and reduce emissions with energy-saving options.

Parrish Total Home Services


When your day is disrupted by broken pipes or an air conditioner that won’t cool, call our certified team: (571)-650-1016We’re available 24/7 for home emergencies, and comprehensive repair services include:

Smart Home Control Display On Tablet

Automate Your Smart Home


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Customer Reviews

Parrish has the best customers in Northern Virginia, hands down! To learn more about the Parrish Difference or discover the many reasons that so many new customers are now lifetime customers, check out these stories from verified clients.

Parrish Services technicians are invariably excellent at their job and very personable. The company may not always be the cheapest one in the area but the few extra percents on the bill buy the very best services in northern Virginia. I would not think of using anybody else.
Philippe Lacoude
Philippe Lacoude
17:20 29 Aug 22
Just a standard maintenance evaluation on my HVAC system but my tech was on time, polite, thorough and knowledgeable. He advised me on parts I can replace myself to buy a little more time with my current older unit rather than trying to upsell me. He advised that I will likely need a new unit in the next couple of years, but again did so without any pressure to address prematurely. Overall it was great exchange and established a sense of honest trade work. This will not be forgotten when it is time to buy a new system!
Tim Brown
Tim Brown
19:01 26 Aug 22
This was our 1st annual check up. Robert was very helpful and professional. However, we found the prices to be very high. We’ll have to really consider the recommendations.
Rickey Butler
Rickey Butler
15:47 17 Aug 22
Team was friendly, professional, focused and in great spirits. So far I have no complaints, no criticisms, house is the perfect temperature. Great job!
Michael Arko
Michael Arko
12:30 16 Aug 22
Great service overall! Doug B did a thorough job on my HVAC check providing info on preventative maintenance need next time I need HVAC check, which I will definitely do between Nov and Jan! Great job!!
Lisa Timmering
Lisa Timmering
01:58 02 Aug 22
Joe was exceptional! He quickly diagnosed the issue with my A/C unit/cleared the "fault" and wa-la, the until began working again! Thanks Joe for your work!
Lisa Hensley
Lisa Hensley
15:59 01 Aug 22
When your air conditioner goes out, and it's July...the hottest month of the year...it's an emergency! So I took the first appointment I could get with a company that used a bait and switch technique of leading me to believe they could come soon- only to later confess they would have to come later. I kept calling around and got someone at Parrish Services. They were honest about what they could and could not do. They sent out true professionals who diagnosed the problem within 10 minutes...fixed it, and spoke honestly about what they were doing and what to look out for in the future! Thank you Parrish Services!!
grady powell jr
grady powell jr
09:05 22 Jul 22
I have had a service contract with Parrish Services for many years. Everyone now and again I get pleasantly surprised with service for an issue that is most unpleasant.I had my semi-annual service check done 2 weeks ago. Over the past 2 days it's been warm in the house. I called Parrish to come back to look at the A/C system again. In a matter of 2 hours they were able to schedule next-day service, and the tech re-arranged his calls for service so that he spent less time driving. That meant I was next on his schedule based on location of service calls.The tech ended up locating a major coolant leak. We opted for the lesser of two expenses by having the coil replaced (a quarter of the price of a brand new unit; still not cheap, but better than replacing the entire unit).I am thankful for Parrish Services' scheduling diligence and courteous service. They bent over backwards to schedule a next-day appointment during a stretch of the year when they have an overabundance of A/C service calls.
Peter Prinz
Peter Prinz
13:50 21 Jul 22
Joe C is the Man! Very professional and knowledgeable. He kept me informed every trouble shooting step of the way. Parrish Services, Inc is definitely #1 on my list for all HVAC needs. Thank you!Also thanks to the young lady that booked my appointment! Sorry I can remember her name. She was very kind and found me an opening.
Lee Andrews
Lee Andrews
18:09 02 Jun 22
Really excellent service at all levels, from scheduling to the actual repair. Christopher L. was knowledgeable and extremely smart and persistent in diagnosing the problem and repairing it. We will definitely be using their services again. A+++++
The McFeely Rainbow Experiment
The McFeely Rainbow Experiment
19:56 25 May 22