Geothermal VRF Units Compared: Haier MRV W vs Samsung, Midea, Gree, Daikin & LG (2026)
Every major manufacturer now builds a water-source VRF — the class of unit that makes geothermal cooling work. We install and evaluate these machines for a living, so here is the comparison we wish existed: Haier's MRV W against Samsung, Midea, Gree, Daikin, Mitsubishi and LG, using each brand's own published figures — and honest notes where a brand publishes nothing.
The contenders — and why they exist
A water-source VRF is the same idea as the VRF systems in premium homes and offices, with one change that matters enormously in Pakistan: the outdoor unit dumps heat into a water loop — a buried geothermal loop, a cooling tower, even a water tank — instead of the outside air. The loop sits near 30°C all year. The air, in June, does not.
| Brand | Series | Module range | Max combined | Refrigerant |
|---|---|---|---|---|
| Haier | MRV W | 8–12 HP / module | 36 HP · 100.5 kW (3 modules) | R410A |
| Samsung | DVM S Water | 8–30 HP / module | ~120 kW (3 modules) | R410A |
| Midea | MDV V4+ W | 8–12 HP / module | 36 HP · 101.5 kW (3 modules) | R410A |
| Gree | GMV Water | 8–12 HP / module | 36 HP (3 modules) | R410A |
| Daikin | VRV W-series | 8–10 HP / module | ~30 HP class | R410A |
| Mitsubishi Electric | City Multi PQHY / PQRY | 6–20 ton / module | large multi-module | R410A |
| LG | Multi V Water 5 | 8 HP class up | ~32 HP class | R410A |
| Hitachi / York | Water-Source VRF / YVWH | 6–48 tons | 48 tons (largest published) | R410A |
Architecturally these are siblings: modular water-cooled outdoor units feeding the same families of ducted, cassette, wall and floor indoor units, combinable up to whole-villa capacity. The differences that matter are efficiency, capabilities, documentation, and what you can actually buy and service in Pakistan.
Efficiency: the published numbers
Efficiency is the whole argument for this class of machine, so let's hold every brand to its own datasheet. EER is cooling delivered per watt consumed; COP is the same idea for heating. Higher is better, and anything above ~4.5 in cooling is territory air-cooled systems cannot reach in our climate.
| Unit | EER (cooling) | COP (heating) | Notes |
|---|---|---|---|
| Samsung DVM S Water 8 HP | 6.10 | 6.35 | best published rated figures in class |
| Samsung DVM S Water 12 HP | 5.60 | 6.05 | mid-size module |
| Samsung DVM S Water 30 HP | 5.00 | 5.60 | largest single module |
| Haier MRV W | 4.98 | 6.02 | brand-published series figures |
| Midea MDV V4+ W | IPLV up to 5.9 | — | IPLV is a part-load metric — not directly comparable to rated EER |
| Gree GMV Water | not published openly | not published openly | figures in service manual only |
| Daikin / Mitsubishi / LG | on request | on request | published via selection software, not public datasheets |
Water-source figures are manufacturer-published rated EERs (≈30°C loop water). Air-cooled figures are typical published ratings; the 2.5 is the Gree Airy Pro's own high-mode datasheet figure from our running-cost article.
Power per ton: what your meter sees
Efficiency ratios become rupees when you convert them to electricity drawn per ton of cooling (3.517 kW of cooling ÷ EER). This is the number your meter — and your solar array — actually deals with:
Derived directly from the EERs above. Lower is better. At 8 tons of cooling, the difference between 0.7 and 1.4 kW/ton is roughly 5.6 kW of continuous demand — the difference between a load your rooftop solar can carry and one it cannot.
Capabilities compared
Beyond raw efficiency, the units differ in what they can do and what they document. This is the practical capability matrix from published materials:
| Capability | Haier MRV W | Samsung DVM S Water | Midea V4+ W | Gree GMV Water |
|---|---|---|---|---|
| Geothermal loop support | Yes | Yes (explicit) | Yes | Yes |
| Water temperature range | cooling tower / boiler loop | 10–45°C | published in datasheet | published in manual |
| Heat-recovery variant (cool + heat at once) | No — heat pump only | Yes (HR models) | Heat pump | Yes (HR models) |
| Max indoor units per module | MRV indoor lineup | 14–55 depending on module | V4+ indoor lineup | full GMV5 indoor lineup |
| Compressor | Mitsubishi Electric DC scroll | Samsung inverter scroll, flash injection | DC inverter | DC inverter |
| Sound pressure (module) | — | 45–56 dB(A) | — | — |
| Public engineering documentation | basic | excellent — full PI sheets | moderate | service-manual level |
Two entries deserve comment. Heat recovery — cooling some rooms while heating others simultaneously — exists in Samsung's and Gree's water-source ranges but not in the MRV W, which is a heat-pump-only system; for most homes this is irrelevant (the whole house wants the same thing at once), but for mixed-use buildings it can matter. And documentation quality is a real engineering criterion: Samsung publishes complete specification sheets openly, which makes design and verification easier; several rivals keep theirs inside selection software or distributor channels.
The premium Japanese and Korean lines
- Daikin VRV W — the benchmark name in VRF. Excellent build and controls; priced accordingly, and Pakistani supply is special-order with limited water-source track record here.
- Mitsubishi Electric City Multi PQHY/PQRY — the gold standard for heat recovery (PQRY); modules from 6 to 20 tons. Superb machines, premium pricing, thin local water-source support.
- LG Multi V Water 5 — strong controls ecosystem, accepts loop water down to −5°C with antifreeze (relevant for northern Pakistan), up to 300 m total piping.
- Hitachi / York (Johnson Controls) — the largest published capacities in the class (to 48 tons); aimed at commercial towers more than homes.
Cost: the honest picture for Pakistan
Here we owe you candour: no manufacturer publishes retail prices for water-source VRF in Pakistan, because none of them stock it here — every unit in this article is a special-order import. Anyone quoting you an exact off-the-shelf price for these machines is improvising. What we can give you are honest working ranges from import quotations and regional pricing:
| Tier | Brands | Indicative hardware cost | What you're paying for |
|---|---|---|---|
| Chinese majors | Haier MRV W · Midea V4+ W · Gree GMV Water | ≈ Rs 250,000–320,000 per ton | Comparable hardware, strongest price leverage, best local service networks |
| Korean | Samsung DVM S Water · LG Multi V Water | ≈ Rs 300,000–380,000 per ton | Best published efficiency (Samsung), strong controls (LG) |
| Japanese premium | Daikin VRV W · Mitsubishi City Multi W | ≈ Rs 350,000–450,000+ per ton | Brand assurance, refinement, heat-recovery depth |
The running-cost side of the ledger is where the class wins as a whole — we've worked those numbers against LESCO tariffs in our running-cost comparison: roughly Rs 600,000–800,000 a year of air-conditioning electricity for a large home, cut by 40–55% before solar, and to near zero with it.
Availability and service in Pakistan
| Brand | Pakistan presence | Water-source reality |
|---|---|---|
| Haier | Manufacturing + nationwide service (Haier Pakistan) | MRV W listed on Haier Pakistan's own site — the shortest import path |
| Gree | Massive — local manufacturing, deep dealer network | Water-cooled GMV special-order via commercial channel |
| Midea | MIA Group / Humak — 15 cities | V4+ W special-order |
| Samsung / LG | Electronics presence; HVAC via distributors | Special-order, thinner VRF service bench |
| Daikin / Mitsubishi | Premium dealer networks, mainly air-cooled | Special-order, limited water-source track record |
For a system you will own for fifteen years, the service network matters more than half a point of EER. This is why the practical short-list for a Pakistani home is Haier MRV W, Gree GMV Water and Midea V4+ W — with Samsung the efficiency pick where its import channel works for your project.
Our verdict
- Best published efficiency: Samsung DVM S Water — EER to 6.1, COP to 6.35, and the best public documentation in the class.
- Best practical choice for Pakistan: Haier MRV W — genuinely competitive figures (EER 4.98 / COP 6.02), listed by Haier Pakistan itself, backed by the deepest local presence.
- Best price leverage: Midea V4+ W and Gree GMV Water — near-identical architecture to the MRV W, and the quotes that keep everyone honest.
- The real headline: the whole class beats air-cooled cooling in our climate by 40–55% on electricity — the brand question is second-order compared to the decision to put your heat into the earth instead of 50°C air.
New to the technology itself? Start with the complete guide to geothermal in Pakistan or see why it keeps working at 50°C.
Frequently asked questions
Q. What is a water-source (geothermal) VRF system?
It is a VRF air-conditioning system whose outdoor unit rejects heat into a water loop — a geothermal ground loop, cooling tower, or water body — instead of the outside air. Because the loop stays near 30°C while Pakistani summer air hits 45–50°C, the compressor works against a far smaller temperature gap and uses much less electricity for the same cooling.
Q. Which water-source VRF unit is the most efficient?
By published rated figures, Samsung's DVM S Water leads with EER up to 6.1 and COP up to 6.35 on its 8 HP module. Haier's MRV W publishes EER 4.98 and COP 6.02. Midea publishes a system IPLV up to 5.9. All water-source units comfortably beat air-cooled VRF, whose efficiency collapses in 45–50°C heat.
Q. Can these units run on a geothermal ground loop in Pakistan?
Yes — every unit in this comparison (Haier MRV W, Samsung DVM S Water, Midea V4+W, Gree GMV Water, Daikin VRV W, Mitsubishi City Multi W, LG Multi V Water) is designed to accept a ground loop, cooling tower, or other water source. Typical accepted water temperatures are around 10–45°C, which a Pakistani ground loop sits comfortably inside all year.
Q. How much does a water-source VRF system cost in Pakistan?
No brand publishes retail prices for water-source VRF in Pakistan — every unit is a special-order import. As a working range, imported hardware typically lands at roughly Rs 250,000–400,000 per ton before the ground loop and installation, putting a whole-house system in the same bracket as premium air-cooled VRF — with far lower running costs.
Q. Is water-source VRF better than normal (air-cooled) VRF in hot climates?
In Pakistan's climate, decisively. Air-cooled VRF must reject heat into 45–50°C air on the worst days, exactly when you need cooling most, and its efficiency drops sharply. A water-source unit rejects heat into a ~30°C loop regardless of the weather, so its power draw per ton barely changes between a mild evening and the peak of June.