Expedition Heating & Air offers the Precision HVAC Sizing Scan — a 3D imaging-assisted Manual J load calculation that determines the exact heating and cooling system size your home in the Dallas–Fort Worth area actually needs, starting at $399. Most HVAC contractors in DFW size systems by square footage alone, which routinely produces oversized equipment that short-cycles, fails to control humidity, and wears out years ahead of schedule. Our scan uses 3D imaging technology to capture precise measurements of your home’s layout, insulation, windows, and ceiling heights, then runs a full Manual J calculation against local DFW climate data — the same method engineers use for new construction. You receive a complete written report you own and can use with any contractor. Call 469-905-4822 or visit expeditionhvac.com to schedule your sizing scan in Garland, Rowlett, Sachse, Mesquite, or anywhere across DFW.
Precision HVAC Sizing Scan — DFW’s Most Accurate Way to Size Your System
Stop guessing. Get the exact system size your home needs — backed by a full Manual J load calculation.
Why Most DFW Homes Have the Wrong Size AC
The way HVAC systems get sized in DFW has been broken for decades. Most contractors look at square footage, pick a tonnage, and call it done. The result? Roughly half the homes we go into in Garland, Rowlett, Sachse, and Mesquite have a system that’s too big for the house.
An oversized system short-cycles — it blasts cold air, hits the thermostat setpoint in 8 or 10 minutes, and shuts off before it can remove humidity. Your thermostat says 74°F but the house feels sticky and uncomfortable because the humidity is still sitting at 60–65%. On top of that, all those short start-stop cycles burn more electricity than a properly sized system running steady cycles.
An undersized system has the opposite problem — it runs constantly and still can’t keep up on a 105°F Texas afternoon.
Neither one is what you paid for. Both problems start at the sizing stage.
The Right Way to Size an HVAC System
A proper Manual J load calculation accounts for:
- Square footage
- Ceiling height
- Insulation levels (walls, attic, floor)
- Window size, orientation, and glass type
- Sun exposure and shade
- Local climate data
- Number of occupants
- Duct system condition
This is the method engineers use for new construction. It’s the method we use for every Precision HVAC Sizing Scan.
What’s Included in the Scan
- 3D imaging scan of your home’s layout and dimensions
- Full Manual J load calculation
- Room-by-room heat gain and heat loss analysis
- Equipment sizing recommendation (tonnage + BTU)
- Written report — yours to keep and use with any contractor
- DFW climate data factored in
- Typical completion: 1–2 hours on site
How the Precision HVAC Sizing Scan Works
We come to your home with 3D imaging equipment that captures precise measurements of every room — ceiling heights, window dimensions, wall depths — faster and more accurately than manual tape measurements. That data feeds directly into a Manual J load calculation that accounts for your home’s specific insulation levels, window orientation, sun exposure, and local DFW climate conditions.
The result is a complete written report that tells you exactly what size system your home needs. Not a guess. Not a rule of thumb. The actual number, calculated the right way.
You own the report. You can use it with Expedition or take it to any other contractor. We built this service because homeowners deserve to know what their home actually needs before spending $6,000–$12,000 on new equipment.
Straightforward Pricing
Single System
$399
Complete 3D scan + Manual J calculation for one HVAC system. Full written report included.
Additional System
$199
Each additional system in the same home scanned and calculated during the same visit.
The diagnostic fee is not waived with a system purchase — this is a standalone engineering service. The report belongs to you regardless of who you hire for the installation.
Is the Precision HVAC Sizing Scan Right for You?
You’re replacing your AC soon
If you’re getting quotes for a new system, a sizing scan gives you an independent verification of what size you actually need — so no contractor can talk you into oversized equipment.
Your home feels uncomfortable despite a working AC
Sticky humidity at the right temperature, uneven rooms, a system that runs constantly or barely at all — these are all symptoms of a sizing problem. The scan tells you definitively whether that’s the issue.
You want to build or renovate
New construction and major renovations require proper load calculations for permit and warranty compliance. We provide a complete Manual J report suitable for contractor and permit use.
Get the Right Size — The First Time
Schedule your Precision HVAC Sizing Scan in Garland, TX and the Dallas–Fort Worth area. $399 for a single system. Written report included. No obligation to purchase anything from Expedition.
Questions? Call 469-905-4822 — Monday–Friday 8AM–5PM
Expedition Heating & Air | Licensed TACLB112648E | Garland, TX