Rheem Air Conditioners
From dependable single-stage Classic units to variable-speed Prestige systems, we size, install, and service Rheem central air — a residential cooling line we've installed for years.
Why Rheem air conditioners?
Central cooling built around your home, not a sales script
Rheem's Endeavor Line covers the full range of residential central air conditioners — single-stage, two-stage, and variable-speed inverter systems. Because we've installed Rheem for years as our secondary residential line, our technicians know this equipment inside and out: how to size it, how to set refrigerant charge correctly, and how to seal the ductwork so the rated efficiency actually shows up on your bill.
Every Rheem AC quote from Degenhardt starts with a free in-home estimate. We check the load, the airflow, and the ductwork before we ever talk equipment — because an oversized or starved air conditioner will never cool comfortably, no matter whose name is on the cabinet.
Start with the full lineup on our Rheem Systems overview, or compare repair-versus-replace math with our repair-or-replace guide.
Right-sized, not upsold
We calculate what your home actually needs and quote across Rheem's tiers, so you choose the efficiency level that fits your budget — never a one-size-fits-all box.
Quieter, steadier cooling
Two-stage and variable-speed Rheem systems run longer at lower speeds, holding temperatures more evenly and running noticeably quieter than older single-speed units.
Smart-control ready
Select Rheem systems support EcoNet smart monitoring and control, so compatible equipment can be adjusted and watched from your phone.
Union-built install
Local 36 sheet-metal craftsmanship on every connection. A clean, sealed install protects the efficiency and lifespan you paid for.
The lineup
Air Conditioners tiers, explained simply
We'll recommend the tier that fits your home and budget — never a one-size-fits-all upsell.
Endeavor Prestige Series
Up to ~20 SEER2Variable-speed (inverter)
Rheem's top residential cooling tier — inverter-driven capacity that ramps to match the moment for the highest efficiency and the most even, quiet comfort.
Endeavor Classic Plus Series
~17 SEER2Two-stage
A strong balance of efficiency and value: quieter two-stage cooling that holds setpoints more steadily than single-stage equipment.
Endeavor Classic Series
15.2–16 SEER2Single-stage
Dependable, budget-friendly cooling that meets current efficiency standards — a reliable workhorse for many South St. Louis homes.
Efficiency figures are Rheem-published ranges for the Endeavor Line and vary by model and configuration. Final equipment, sizing, and pricing are confirmed at a free in-home estimate. Depending on the system, you may also qualify for Ameren Missouri or Spire rebates, and financing options are available.
Common questions
Rheem Air Conditioners: quick answers
It depends on how long you plan to stay, your comfort priorities, and your budget. The Classic Series is the dependable value pick; Classic Plus adds quieter two-stage operation; Prestige adds variable-speed comfort and the highest efficiency. We quote across tiers at your free estimate so you can compare real numbers side by side.
Sizing comes from a load calculation on your actual home — square footage, insulation, windows, and ductwork — not a rule of thumb. Oversized systems short-cycle and dehumidify poorly; undersized ones never catch up. We measure first, then recommend.
Yes. Rheem is a residential line we install and service regularly, and our NATE-certified technicians repair and maintain Rheem equipment regardless of who installed it — along with most other major brands.
Depending on the system and current programs, qualifying high-efficiency equipment may be eligible for Ameren Missouri or Spire rebates. We verify current eligibility before you sign, so the paperwork is real — see our rebates page for what's active now.
Keep exploring
More of the Rheem residential lineup
Free estimate
Thinking about rheem air conditioners?
Tell us about your home and current equipment and we'll come out for a free estimate — sized correctly, ductwork confirmed, and honest options across the Rheem lineup. Office hours are Mon–Fri 7–4, with Saturday and Sunday by appointment.