Commercial rooftop unit replacement cost in Michigan runs from $8,000 to $65,000 or more depending on tonnage, efficiency tier, crane requirements, and refrigerant transition surcharges in 2026. Samco Facilities Maintenance quotes RTU replacements with flat line-item pricing that includes crane fees, rigging, permit filing, refrigerant recovery, and startup. Call (734) 838-6300 for a site-specific estimate from a crew that has replaced units on buildings across Southeast Michigan.
Why RTU Replacement Quotes Keep Surprising Michigan Facility Managers
A building owner in Oakland County gets a quote for $14,000 to replace a 7.5-ton rooftop unit. Another quote on the same equipment comes in at $24,000. Neither contractor explains the gap, and neither quote itemizes crane rental, refrigerant recovery, or the disconnect panel that the local inspector will flag on permit review. The low number looks like a deal until the change orders arrive.
RTU replacement pricing in Michigan is notoriously difficult to benchmark because the final number depends on so many variables that change by building, by season, and by equipment tier. Crane access on a building with a loading dock in Dearborn is a different logistics problem than a rooftop in downtown Detroit with street closure permits. A 20-ton unit with a 14 SEER2 minimum at 2026 federal standards costs more than the 13 SEER unit it is replacing, and the R-410A to R-454B refrigerant transition that phased in for new equipment adds a parts premium that was not in last year’s budget.
Facility managers across Wayne County and Oakland County have told us the same thing: they do not mind paying the real number. They mind finding out what the real number is after they have already signed. Samco Facilities Maintenance publishes ranges because facility teams in Livonia, Ann Arbor, Warren, and Detroit deserve numbers they can put in a capital budget without getting corrected mid-project.
2026 Price Ranges by Tonnage (Real Numbers, Not National Averages)
The table below reflects Michigan pricing in 2026, including equipment, labor, crane and rigging, refrigerant recovery and recharge, startup and commissioning, and permit fees where applicable. It does not include structural curb modification, electrical disconnect upgrades, or drain line changes, which are common additions on older buildings.
| Tonnage Range | Standard Efficiency | High Efficiency (16+ SEER2) |
|---|---|---|
| 3 to 5 tons | $8,000 to $13,000 | $12,000 to $18,000 |
| 7.5 to 10 tons | $14,000 to $22,000 | $20,000 to $30,000 |
| 15 to 20 tons | $24,000 to $38,000 | $34,000 to $48,000 |
| 25 to 40 tons | $38,000 to $55,000 | $48,000 to $70,000 |
These are installed costs. A 10-ton standard efficiency replacement at $14,000 to $22,000 gets to the low end on a single-story building with clear crane access and no curb modification. It gets to the high end when the curb does not match the new unit footprint, the electrical panel needs a new circuit, and the contractor has to block a lane of parking for crane staging. Michigan pricing runs 8 to 15 percent above the national averages you will find in national trade publications, for reasons the next section covers.
The Michigan Angle: Crane Logistics, Winter Scheduling, and DTE Rebates
Three factors push Michigan RTU replacement costs above national benchmarks, and every facility manager should understand them before the first quote arrives.
First, crane logistics. A significant portion of Oakland County and Wayne County commercial buildings were built with loading dock configurations or site constraints that require a boom truck or mobile crane with a staging radius that affects parking, traffic, and sometimes city permits. Crane rental for a half-day in Southeast Michigan runs $1,200 to $2,500 depending on capacity and boom length. Permits for street occupancy in Detroit and Dearborn add $400 to $800 and a 2 to 4 week lead time. A contractor who does not put these costs on the line item is burying them in margin or planning to charge them as a change order.
Second, scheduling windows. Michigan winters create real risk for exposed roof work and for equipment startup. Rooftop unit replacements in January carry weather hold costs that summer replacements do not. Most experienced Michigan contractors build a weather contingency into winter quotes. Ask for it explicitly if the contractor does not offer it.
Third, the DTE Energy commercial rebate catalog offers rebates for high-efficiency rooftop unit replacements in the DTE service territory, which covers most of Wayne and Oakland counties. A 10-ton high-efficiency unit replacement may qualify for a $500 to $1,500 rebate depending on the unit’s efficiency rating and the current program year. Consumers Energy runs a parallel program for their service territory. Neither rebate reduces the upfront cost, but they reduce the net capital outlay after filing. Ask your contractor if they will handle the rebate paperwork, or confirm you can file directly.
The Seven Line Items That Drive Your Final Number
Before you compare quotes, make sure every proposal includes all seven of these line items explicitly. A quote that omits any of them is not a complete quote.
- Equipment cost by model number and efficiency rating. The specific unit, the specific SEER2 rating, and the new refrigerant type (R-454B for 2026 equipment or existing R-410A stock with disclosure).
- Crane rental and rigging. Half-day or full-day rate, crane capacity, and any traffic control or permit fees associated with staging.
- Refrigerant recovery and recharge. R-410A recovery cost, refrigerant disposal fee, and new refrigerant charge cost. These often run $400 to $1,200 depending on system charge size.
- Curb adapter or new curb. If the new unit footprint does not match the existing curb exactly, a curb adapter or full curb replacement adds $800 to $2,500 to the project.
- Electrical disconnect and wiring. 2026 equipment may require a larger disconnect or updated wiring to meet NEC requirements. If the inspector will flag it, put it in the quote now.
- Startup and commissioning. Includes airflow verification, refrigerant pressure test, controls checkout, and warranty registration. This is not the same as installation. A reputable contractor does both.
- Permit and inspection fees. Michigan Mechanical Code requires a permit for RTU replacement in most jurisdictions. Permit fees vary by municipality from $150 to $600.
How Samco Prices and Schedules RTU Replacements
Samco Facilities Maintenance has replaced rooftop units on commercial buildings across Wayne, Oakland, Macomb, and Washtenaw counties since 1997. Our technicians are EPA 608 Universal Certified and NATE certified. We carry a BBB A+ rating and maintain manufacturer relationships that keep us current on refrigerant transition requirements and warranty registration procedures.
Here is what our process looks like. A Dearborn property management company we have worked with since 2014 had four 10-ton units on a warehouse building that all approached 18 years of age at roughly the same time. We walked the roof, pulled nameplate data, measured the curb, checked the electrical panel, and priced all four replacements with a phased schedule that spread the capital cost across two fiscal years. We handled crane staging, permit filing, and DTE rebate paperwork for all four units. The final net cost after rebates came in below their initial capital budget estimate.
Every Samco RTU replacement quote is itemized by line, includes crane and permit cost, and specifies the exact model number and efficiency rating. To get a site-specific quote, call (734) 838-6300 or visit our contact page. Learn more about our commercial HVAC services and our preventive maintenance programs.
Frequently Asked Questions
How much does a commercial rooftop unit cost to replace in Michigan?
Commercial rooftop unit replacement in Michigan runs $8,000 to $13,000 for a 3 to 5 ton standard unit up to $55,000 or more for a 25 to 40 ton high-efficiency unit. The installed price includes crane, refrigerant recovery, startup, and permits. Equipment alone represents 50 to 65 percent of the total. Get a line-item quote, not a lump sum.
Why does my RTU replacement quote include a crane fee?
Commercial rooftop units weigh 400 to 2,500 pounds depending on tonnage, and they sit on the roof. Getting them up there requires a crane or a large boom truck. Crane rental in Southeast Michigan runs $1,200 to $2,500 for a half day. Any quote that does not include a crane fee is either burying it in labor or planning to add it as a change order after you sign.
What refrigerant surcharge applies to 2026 rooftop unit replacements?
New rooftop units manufactured for 2026 are transitioning to R-454B or other low-GWP refrigerants under EPA phasedown rules. Equipment using the new refrigerants carries a parts premium of 5 to 12 percent over comparable R-410A units. Contractors selling existing R-410A inventory in 2026 should disclose this clearly so you understand the long-term parts cost difference before you choose a unit.
Do I need a permit to replace a commercial rooftop unit in Michigan?
Yes. Michigan Mechanical Code requires a mechanical permit for commercial rooftop unit replacement in virtually all jurisdictions. Permit fees range from $150 to $600 depending on municipality, and some cities require an inspector sign-off before the unit can be commissioned. A contractor who quotes a replacement without mentioning permits is either not pulling them or planning to charge them separately after the fact.
Ready for a Transparent RTU Quote?
If your rooftop unit is approaching the end of its life, or if you have gotten quotes that do not itemize crane fees and refrigerant costs, Samco Facilities Maintenance will walk your roof, measure your curbs, pull nameplate data, and give you a flat line-item quote with no surprises at the change order stage. We serve commercial and industrial facilities across Southeast Michigan from our Livonia base. Call (734) 838-6300 or visit our contact page to schedule a site visit. You can also review our full range of services and learn why facility teams across Wayne, Oakland, Macomb, and Washtenaw counties have trusted Samco since 1997.