Samsung vs LG heat pump in 2026: what the spec sheets say

What’s actually different between them

On headline spec, Samsung EHS and LG Therma V land almost on top of each other. Both Korean manufacturers benefit from the same component supply chain and shared air-conditioning manufacturing scale; the heat-pump product lines diverged less than competing brands’ ranges do.

Where they meaningfully diverge:

• Refrigerant range.Samsung’s current UK EHS range runs R32 across the board. LG launched an R290 (propane, GWP 3) Therma V variant in late 2024, giving installers a low-GWP option without jumping to Vaillant pricing. R32 is the industry mainstream; R290 is where new ranges are heading. If long-term GWP matters to you and you want a Korean-priced install, the LG R290 variant is the only mainstream Korean option at this price point.
• Warranty. Both come with 5 years standard. LG extends to 10 years on registration through its UK warranty portal; Samsung extends to 7 years. Warranty extension is the kind of detail buried in install quotes — ask your installer to confirm what extended warranty terms apply to the specific model and whether you need to register it yourself.
• Smart controls.Samsung’s SmartThings is the broadest smart-home platform of any heat-pump brand — it integrates the heat pump with Samsung TVs, fridges, washing machines if you have those, plus third-party Matter / Google Home devices. LG’s ThinQ is similarly capable but with a smaller third-party ecosystem outside LG’s own products. If you already live in a SmartThings or ThinQ household, brand-match makes the controls story simpler.
• UK warranty processing. Both Samsung and LG handle UK warranty claims through their dedicated UK service teams (separate from headquarters). Response times and parts availability are reported as broadly equivalent in 2026. Some installers report Samsung parts as slightly more readily stocked locally, others report the inverse; treat the question as installer- specific not brand-determined.

How Samsung + LG compare to the top-3 brands

Both Korean ranges position 5–10% below Daikin / Mitsubishi / Vaillant on install pricing for equivalent capacity. The question is whether the install-cost saving offsets the thinner installer network in your area:

• Urban + major-metro areas (London, Manchester, Birmingham, Glasgow, Edinburgh). MCS installer coverage for Samsung + LG is solid, often comparable to the top-3. The 5–10% price saving is a clean win.
• Smaller cities + larger towns. Mixed. Often 1–3 local installers carry Samsung or LG training alongside their primary brand. The price saving stands but installer choice is narrower than for Daikin / Mitsubishi.
• Rural + remote-rural. Often only top-3 brands are quoted. Samsung / LG availability requires travelling installer relationships which may absorb part of the price advantage. Run the MCS installer search for your postcode + 30-mile radius before assuming you have Korean-brand options.

What doesn’t matter as much as people think

• “Established brand” framing. Samsung Electronics and LG Electronics are two of the largest electronics manufacturers globally. Both have decades of air-conditioning + refrigeration experience that translates directly to heat-pump engineering. The newness of their UK heat-pump market presence is a sales + installer-channel question, not an engineering one.
• Anecdotal reliability claims. Both manufacturers publish multi-year MTBF figures well above the 15–20 year UK system lifespan. Forum reports of failures exist for both. Real-world longevity correlates with install quality + maintenance schedule, not make.
• The 0.1 SCOP gap.A SCOP difference of 4.4 vs 4.5 is roughly £20/year on a typical home’s electricity bill. Installer commissioning quality moves real-world SCOP by ±0.3 routinely.

How most UK homeowners actually decide between Samsung and LG

1. Which one your installer quotes by default. MCS installers who carry Korean-brand training typically carry one or the other, not both. The brand your local installer quotes is usually a strong signal — their commissioning familiarity matters more than the spec gap.
2. Refrigerant preference.If lowest GWP matters and you want Korean-brand pricing, LG Therma V R290 is the standout option. Samsung doesn’t have an R290 mainstream variant in 2026.
3. Existing smart-home setup. If you already live in a Samsung / SmartThings household, the controls integration is meaningful. Same for LG / ThinQ. A marginal factor but real for owner-occupiers with existing platform investments.

What to ask your installer

1. Which specific model are you quoting (full part number), and can you send me the MCS product certificate?
2. What flow temperature have you sized for, and what radiator changes does that imply?
3. What’s the warranty path on this brand — standard + extended + does my installer absorb the registration?
4. What’s your real-world SCOP estimate for my property after commissioning, vs the headline lab figure?

Switching pathway

1. Run a free pre-survey at propertoasty.com/check to confirm BUS eligibility + get an installer-ready report for your property.
2. Get 2–3 quotes from MCS-certified installers locally. If the cheapest quotes are Samsung or LG, check the installer’s training credentials for that specific brand and the warranty terms.
3. Verify the specific model on the MCS product database; confirm the certificate is current.

The takeaway

Samsung EHS and LG Therma V are well-engineered Korean air-source heat-pump ranges delivering BUS-eligible installs at typically 5–10% below the Daikin / Mitsubishi / Vaillant price point. Headline specs are close — both run R32 (LG also has an R290 variant from late 2024). Practical pick depends on which Korean brand your local MCS installers carry, refrigerant preference, and whether you already use the SmartThings or ThinQ smart-home platform. Korean-brand availability is strongest in major UK metros and thins out in rural areas.