MECH-018 to 22 weeks
Design-build
One contract from load calculation to commissioning.
Documented at handover
- Load calculation with the assumptions listed
- Equipment schedule with model numbers and selection points
- As-built drawings
Buildings that hold their setpoint.
Commercial and residential HVAC engineering in Denver. Manual J load calculations, documented installs, and systems that actually get commissioned.
We design for the air we actually have.
Every catalogue in this industry is written at sea level. Denver is not at sea level, and the gap between those two facts is where most undersized systems in this city come from.
Check any proposal you have been given. If it does not mention altitude, it was priced at sea level, and the equipment on it is probably the wrong size.
5,280ft
Site elevation we design for. Air here is about 17 percent thinner, so the sensible heat constant falls from 1.08 to roughly 0.90.
1°F
Denver heating design condition at 99.6 percent. Heat pumps get selected on capacity here, not at the 47 °F rating point.
48
Engineers, fabricators and service technicians. NATE certified, EPA 608 Universal.
2009
Designing, building and commissioning mechanical systems on the Front Range.
Service schedule
What we engineer.
Nine service lines. Each one has a written scope, a typical programme, and a list of the documents you hold at handover. Open a folder to read the specification.
MECH-023 to 10 weeks from order
Rooftop units
Packaged RTU replacement, curb adaptation and controls.
Documented at handover
- Pre-changeout airflow and static pressure readings
- Curb adapter shop drawing
- Startup sheet with superheat, subcooling and gas pressures
MECH-0310 to 20 weeks
VRF systems
Heat recovery VRF where zoning and part load matter.
Documented at handover
- Piping isometric with lengths and elevation differences
- Refrigerant charge calculation and RCL check per room
- Commissioning report from the manufacturer startup tool
MECH-046 to 16 weeks depending on plant size
Boilers and radiant
Condensing plant, hydronic loops and slab radiant.
Documented at handover
- Hydronic schematic with design flows and temperatures
- Pump curve with the operating point marked
- Combustion analysis printout at startup and at handover
MECH-052 to 8 weeks including fabrication
Ductwork engineering
Designed to a friction rate. Fabricated in our own shop.
Documented at handover
- Duct layout with sizes, total effective length and design friction rate
- Fabrication shop drawings
- Leakage test results against the specified class
MECH-064 to 14 weeks
Building automation
BACnet controls, sequences written down before they are programmed.
Documented at handover
- Written sequence of operation
- Point-to-point verification checklist, signed
- Trend export from the first 30 days of operation
MECH-02 · Rooftop systems
Look closer at a rooftop system.
A 20 ton packaged unit serving three VAV zones, drawn the way we would issue it. Move the lens over the drawing to read duct sizes, airflows and terminal schedules, or use the stepper to walk through the seven labelled components one at a time.
This is the level of detail that goes into a proposal before anyone talks about price. Sizes are stated, not implied. Static pressure is calculated, not assumed. The economizer has a changeover strategy rather than a hope.
MECH-01 · Design-build
How a design-build job runs.
One contract, five stages, and a document at the end of each one. Nothing gets ordered before the load is calculated, and nothing gets handed over before it is balanced.
Survey and load calculation
We walk the building, measure what is there, and run the load. Assumptions listed, so you can argue with them.
Load calculation report
Equipment selection
Manual S selection against the calculated load, corrected for 5,280 ft. Two or three options priced honestly.
Equipment schedule
Distribution design
Duct and pipe designed to a stated friction rate, with the total effective length recorded rather than assumed.
Layout and shop drawings
Fabrication and install
Fittings cut in our own shop to the drawing, then installed to the programme we agreed at award.
As-built drawings
Commissioning and TAB
Airflows and water flows measured against design, adjusted until they match, and written down.
TAB and commissioning report
Three buildings, with the numbers.
Every case study below lists the measured result, not an adjective. Where we improved something, the reading before and the reading after are both there.
Denver, CO2025
Nine rooftop units replaced over four weekends
Measured fan energy down 31 percent. No tenant lost a working day.
Read the case study
Boulder, CO2025
Heat recovery VRF for a laboratory with 19 zones and one budget
Simultaneous heating and cooling handled without a second plant.
Read the case study
Aurora, CO2024
A warehouse that finally holds 65 F at the floor
Floor level temperature swing cut from 14 F to under 3 F.
Read the case studyWhat clients say when you ask them about the paperwork.
Facility managers do not compliment contractors on charm. They compliment them on being told the truth about what needs replacing and what does not, and on being handed a document at the end.
Reviews are illustrative for this demonstration site. The cube turns on its own, and stops when you hover it or move focus into it.
They measured the static pressure before quoting and told me two of my units did not need replacing. That is the first time a contractor has talked me out of spend.
Marisol Trejo-BehnDirector of Facilities, Central Park flex office campusNine rooftop unit replacement, 2025
Where we work.
Our shop is on Fox Street in Denver. Three cities get a dedicated team and a written response time; the rest of the Front Range is covered from the same building.
Also covering Lakewood, Arvada, Westminster, Thornton, Wheat Ridge, Golden and 6 more.Full list
Tell us what the building is doing wrong.
Send us the building, the equipment and the complaint. You get a written response with the load we would run, what we would measure first, and a range before anyone visits.
Or call (303) 555-0148. Mon to Fri 07:00 to 17:00.