Boilers · Manufacturer
Laars Boiler & Water Heater Service in Phoenix, AZ
Copper-fin heritage and condensing present, from a company that has heated western buildings for generations.
Laars, now part of Bradford White, built its name on copper-fin boilers and water heaters — the Mighty Therm family has heated Phoenix apartment buildings, hotels, schools and commercial buildings for decades — and has moved into condensing equipment with the MagnaTherm and NeoTherm lines. The brand's western roots give it a substantial Phoenix installed base across both generations. Bleuwave services Laars equipment as an independent contractor, without dealer affiliation or factory authorization.
The two generations need different attention. Mighty Therm copper-fin units are simple and flow-sensitive; scale and low flow are their enemies. MagnaTherm and NeoTherm condensing units are efficient and electronically controlled; return temperature, condensate handling, combustion setup and sequencing decide whether they deliver their rating.
Product Families
Laars Equipment We Encounter
Families and designations that appear on nameplates in the Phoenix market. Capacities, refrigerants and configurations vary by model and year; we verify from the nameplate on site rather than from a catalog.
| Family | Category | What it is |
|---|---|---|
| MagnaTherm | Boilers | Large condensing hydronic boilers and water heaters. |
| NeoTherm | Boilers | Condensing boilers and water heaters for mid-size commercial applications. |
| Mighty Therm | Boilers | Non-condensing copper-fin boilers and water heaters; a long-running family common in older Phoenix buildings. |
| Pennant, Rheos and other Laars families | Boilers | Additional copper-fin and condensing boiler and water-heater lines. |
MagnaTherm, NeoTherm and Mighty Therm
MagnaTherm condensing boilers and water heaters serve large hydronic and domestic-water loads with stainless exchangers, modulating burners and controls for plant sequencing. NeoTherm covers the mid range with the same technology. Mighty Therm copper-fin boilers and water heaters serve non-condensing applications and remain common in Phoenix buildings from the 1980s onward. Pennant, Rheos and other families extend the copper-fin and condensing lines.

Service in Phoenix
Copper-fin units suffer scale, kettling, tube and header leaks and high-limit trips from Phoenix water and low flow. Condensing units show exchanger scale, condensate problems, combustion drift, sensor faults and sequencing issues. Idle-season neglect produces first-cold-morning failures on hydronic units; domestic-water units run year-round and need scale attention on their own schedule. Every service includes combustion analysis, safety verification and exchanger inspection; repairs cover burners, ignition, gas valves, controls, exchangers, headers, pumps and venting; replacement — often a Mighty Therm-to-condensing conversion — is engineered with return-temperature, condensate and venting implications addressed.
Straight Answers
Questions About Laars Equipment
Should we replace our Mighty Therm with a NeoTherm or MagnaTherm?
Often it pays, but a condensing boiler needs low return temperatures and condensate handling to deliver its efficiency. We evaluate your distribution system and usage and show projected savings against installation cost.
Is Bleuwave a Laars representative?
No. We service Laars equipment as an independent contractor without dealer affiliation or factory authorization.
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