Planning a gas heating installation in Phoenix for a building rather than a bedroom? Commercial and residential gas heat, from a single furnace to rooftop packaged units and multi zone systems across an office or a retail floor. Adams sizes the load, handles the venting and gas supply, pulls the city permit, and commissions the system by measurement.
Commercial and residential gas heat, any hour. Arizona ROC 245268.
Standard efficiency and condensing equipment for homes, offices, and small commercial spaces. Sized by load calculation, with venting and gas supply checked before anything is ordered, because those two constraints decide more of the answer than the model does.
Common across Phoenix commercial buildings and flat roof housing. Heating and cooling in one cabinet on the roof, so installation involves curb work, crane access, drainage, and clearances alongside the equipment itself.
A gas furnace paired with a heat pump, switching between them by outdoor temperature. In a climate with a long cooling season and a short mild winter, this is often the arrangement that makes the most of both.
Offices and retail floors rarely work on one thermostat. Zoning, custom duct design, and airflow balancing so the far corner of the floor is not heated to the same setpoint as the space beside the unit.
Staging, scheduling, and zoning controls set up properly, including commercial schedules that stop a building heating an empty floor all weekend.
The combustion is identical. The scale, the access, and the cost of being without heat are not.
Same technicians, same parts counter, and the same building on North 35th Avenue behind both.
What gas heating work looks like in this city
Commercial gas heat in Phoenix is mostly a rooftop conversation. Flat roofs across the city carry packaged units that handle heating and cooling in one cabinet, which makes an installation a question of curb dimensions, crane access, roof structure, and drainage before it is ever a question of equipment. Getting that sequence backwards is how a straightforward replacement turns into a two day problem.
The season shapes the rest. Heating demand here is short and it arrives abruptly, so a building can go from irrelevant to urgent in a single evening, and every other building in the city discovers the same thing on the same night. Planned commercial work belongs well before that, which in practice means quoting in the autumn rather than reacting in December.
The equipment also spends most of the year doing the opposite job. The same cabinet that heats an office in January is cooling it across the 111 or so days a year the city spends at or above 100 degrees, and monsoon dust between June 15 and September 30 loads the coils in between. Anything you specify for heating is living through that.
Older central Phoenix buildings add a venting constraint. Structures built around atmospheric venting have flues sized for standard efficiency equipment, and moving to condensing gear means new venting and a real condensate route. That work belongs in the quote rather than in a change order.
These are federal and municipal rather than anybody preference, and one of them gets used as a closing argument more often than it deserves.
Do not switch anything on or off, including lights. Get everyone out of the building, then call the gas utility or 911 from a safe distance. Call us once the building is clear.
Commercial heating replacement is a capital decision with a deadline attached to it, and the deadline is usually weather. Adams is among the HVAC companies in Phoenix that will quote the venting and duct work up front rather than after the roof is open.
Financing is available on new equipment. Terms and approval come from the lender rather than from us, so the real answer on rate and length comes out of an application instead of a web page. Current options are on the financing page.
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Yes, and it is a large share of this work. Rooftop packaged gas units, multi zone systems for offices and retail floors, custom duct design, and scheduling controls. The line is open every hour, which matters when a heating failure is closing a business day rather than making a bedroom cold.
Generally yes. City of Phoenix guidance requires a permit to add or relocate a furnace, air conditioner, or evaporative cooler, and to change unit size, capacity, or location. A new gas heating installation normally falls inside that, and we pull the permit as part of the job.
Often. A heat pump handles the long cooling season and most of a mild Phoenix winter, with the gas furnace taking the coldest stretches. It suits this climate better than it suits most, though the answer still comes from the load calculation and what equipment you already own.
No. The 95 percent AFUE standard applies to furnaces manufactured on or after December 18, 2028, not to what is installed today, and its status is unsettled as of August 2026. Anyone using it as urgency in a quote should be asked to show you the compliance date.
Usually, but it is a venting question. Condensing equipment vents through plastic pipe and produces condensate that has to drain somewhere, so a structure built around an atmospheric flue needs new venting and a drain route. That work belongs in the quote.
It depends on curb match, crane access, and whether the duct or venting needs work, so we give you a schedule with the quote instead of a number on a web page. What we can commit to is telling you what the constraints are before the roof is opened, not after.
If you don't find your question addressed above, feel free to contact us.
Contact UsAdams Refrigeration has installed gas heating in Phoenix homes and buildings since 1947. Book a time or call the line below, and we start with the load, the venting, and the access.
