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True Knowledge HVAC ServicesHVAC contractor in Greater Upper Marlboro, MD

True Knowledge HVAC Services is an HVAC contractor in Greater Upper Marlboro, MD, rated 5.0 from 10 Google reviews. Open 7 days a week.

Greater Upper Marlboro, MD0 paid placements in any rankingHow we rank

Call (877) 884-9394Website ↗

Key facts

Key facts about True Knowledge HVAC Services
Phone(877) 884-9394
Websitetrueknowledgehvac.com
HoursMonday to Saturday: open 24 hours; Sunday: 7:30 AM – 2 PM
Google rating5.0 from 10 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Greater Upper Marlboro and 12 towns within 25 miles: Baltimore, Charles Village, Lansdowne, Baltimore Highlands, Brooklyn Park, Arbutus, Pumphrey, Linthicum, Dundalk, Catonsville, Rosedale and Woodlawn.

Based in Greater Upper Marlboro, MDView on map

Opening hours

Opening hours for True Knowledge HVAC Services
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
Sunday7:30 AM – 2 PM
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

Typical heating and cooling prices

Typical heating and cooling prices
JobLowTypicalHigh
AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range$3,887$5,978$8,073
Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range$2,823$4,814$6,896

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Reviews

ContractorsRanked reviews

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Google

5.0from 10 Google reviews

Hired True Knowledge HVAC Services? Write a review

Questions about True Knowledge HVAC Services

What are True Knowledge HVAC Services’ hours?

True Knowledge HVAC Services is open 7 days a week. Its listed hours are Monday to Saturday, open 24 hours; Sunday, 7:30 AM – 2 PM. On Saturdays it is open Open 24 hours, and on Sundays 7:30 AM to 2 PM. Hours come from the business listing; holiday hours may differ.

What areas does True Knowledge HVAC Services serve?

Serves Greater Upper Marlboro and 12 towns within 25 miles: Baltimore, Charles Village, Lansdowne, Baltimore Highlands, Brooklyn Park, Arbutus, Pumphrey, Linthicum, Dundalk, Catonsville, Rosedale and Woodlawn. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.

What do Google reviews say about True Knowledge HVAC Services?

True Knowledge HVAC Services has a rating of 5.0 from 10 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact True Knowledge HVAC Services?

Call True Knowledge HVAC Services on (877) 884-9394. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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