Bohn (now part of Heatcraft) and Heatcraft Refrigeration Products together cover the majority of hotel walk-in evaporator coils and condensing units in Tampa Bay. Both are workhorses; both have predictable failure modes and parts availability. For a hotel engineer specifying replacement walk-in refrigeration, the spec details that matter are coil temperature differential, defrost type, condenser-coil corrosion package, and the EC fan motor option.
Bohn and Heatcraft are now under the same parent (Lennox International). Bohn-branded evaporator coils and Heatcraft-branded condensing units are common in hotel walk-in installations going back 20+ years. The brands are sold separately but the parts ecosystem overlaps significantly. For a tech servicing a 1998-vintage Bohn evaporator, parts are still available through Heatcraft distribution.
The two specs that drive performance: temperature differential (TD) between box temperature and saturated suction temperature, and fin spacing. For a 36°F walk-in cooler, 10°F TD coils run quieter and use less defrost, but require more fan-coil surface. For a -10°F freezer, 15°F TD coils are more common. Hotel banquet walk-ins should run 8–10°F TD with electric defrost on a digital defrost controller.
For hotel rooftop and mechanical-penthouse condensing units, spec the high-ambient package: 95°F design ambient minimum, fan cycle head-pressure control or VFD condenser fan, hot-gas bypass on freezer applications. Tampa Bay rooftop conditions punish under-spec'd condensing units.
Older walk-in evaporator and condenser fan motors are PSC (permanent split capacitor). EC (electronically commutated) motors use 30–50% less energy and last 2–3x longer. Retrofit kits are available for both Bohn and Heatcraft. The payback on Tampa Bay electric rates is typically 18–30 months — and the longer service life matters more than the energy savings on a busy banquet walk-in.
For Don CeSar, Vinoy, Hyatt Regency Clearwater Beach, and other coastal properties, condenser coils need Heresite or e-coat protection. Standard coils corrode within 3–4 years on Gulf-front rooftops. Bohn and Heatcraft both offer the package; capex premium runs 12–18%.
Older walk-ins use timed defrost — defrost runs on a clock regardless of need, or terminates on time rather than coil temperature. Modern digital defrost controllers (Heatcraft Beacon II, Sporlan defrost controls) terminate on actual coil temperature, which prevents both insufficient defrost and excessive defrost. A controller upgrade on a 12-year-old hotel walk-in runs $850–1,400 and pays back in defrost-related capacity loss alone.
Bohn/Heatcraft parts are deeply available in Tampa Bay through major refrigeration distributors. Common consumables (fan motors, defrost heaters, defrost controllers, EEVs) run same-day. Coils and condensing units run 24–72 hours depending on size and corrosion package. For emergency dispatch, the parts ecosystem is the strongest of any walk-in brand in the market.
Yes. 30–50% energy reduction and 2–3x longer service life. Payback runs 18–30 months on Tampa Bay rates, faster on banquet walk-ins running long hours.
On most components, yes — they share an engineering and parts ecosystem under Lennox International. Some legacy SKUs require model-specific verification.
Heresite or e-coat condenser coils minimum, marine-grade fasteners, stainless cabinet on the condensing unit, and a quarterly freshwater rinse PM. Standard coils corrode within 3–4 years on Gulf-front sites.
Annual at minimum. Termination temperature, cycle frequency, and cycle duration should match operating conditions, not factory defaults from 15 years ago.
Suncoast Cold Systems handles exactly this kind of commercial refrigeration issue across Tampa, St. Petersburg, Clearwater, Brandon, Riverview, Temple Terrace, and Wesley Chapel. 24/7 dispatch. Licensed Class A A/C Contractor (FL #CAC1824642), EPA 608 Universal, OSHA 30 Construction.
Six causes ranked for hotel banquet walk-in failures.
Capacity math for cover counts, plated holds, and prep windows.
The 72-hour runbook for properties on the water.