Shifting Gears at InstallerSHOW: Why R290 Air-to-Water Heat Pumps Are the Next Big Chapter in Home Heating

The NEC halls are buzzing this week, but the real InstallerSHOW dialogue is happening on LinkedIn. While UWO isn’t physically exhibiting, the market’s pivot toward R290 refrigerant makes our VariWarm platform hard to ignore. Here’s why specifiers and merchants scrolling the #InstallerSHOW keep stopping at R290 air-to-water heat pumps—and how UWO turns that interest into value.

The “why now” for R290

• Future-proof refrigerant: Propane’s GWP is just 3, a 225-fold drop versus R32 and a 700-fold drop versus legacy R410A, keeping projects clear of the tightening F-Gas phase-down.
• Higher latent heat delivers stronger capacity at lower charge volumes, removing the performance hit usually seen when switching to greener gases.

The performance envelope that matters to installers

• 75 °C leaving-water temperature—hot enough for retrofit radiators and legionella-safe DHW without backup heaters1.
• Stable operation down to –25 °C ambient, giving rural and northern sites true year-round resilience.
• Full-inverter compressor, fan and pump logic earns ErP Class A for both 35 °C and 55 °C test points while keeping sound pressure to 43 dB(A) at 1 m.

Engineering for first-fix speed

• Monobloc chassis: all refrigerant sealed at the factory, so no on-site F-Gas ticket required.
• VariWarm Guard adds a pre-wired hydraulic module—pump, expansion vessel, three-way valve and electric back-up—cutting install time to a single visit.
• Two-zone control lets installers run UFH downstairs and steel radiators upstairs off the same unit with independent set-points.

Grid-ready controls your customers will ask for next year

• SG-Ready and PV-Ready modes unlock dynamic tariff or solar-surplus optimisation straight out of the box.
• Cloud dashboard and mobile app enable remote commissioning, firmware OTA updates and energy-use visualisation—no add-on gateway required.

Where to dig deeper

• Download the full VariWarm Focus & Guard specification sheets in the Air-to-Water section of the UWO website.
• Explore our patent-backed spiral heat-exchanger core that lifts seasonal COP without increasing footprint—details also on uwo-heatpump.com.
• Message the UWO team on LinkedIn during #InstallerSHOW week for sample calculators, CPD material and distributor pricing.