Conclusion first: for a mixed-network UK warehouse, hotel, factory or large office above roughly 1000 m² or above 100 active phones, buy the GDW2000 at £1390.38. It shares the exact same Band 8 + Band 3 + Band 1 tri-band architecture and the same ≥27 dBm output as the GDW1000, but doubles coverage from 1000 to 2000 m², doubles users from 100 to 200, and adds 5 dB of uplink gain (60 to 65 dB) and 5 dB of downlink gain (65 to 70 dB) for a £299.77 premium. If your site is a single 1000 m² floor on the same tri-band stack, the GDW1000 at £1090.61 is the correct buy and the £299.77 can stay in the budget.

Below 1000 m² the decision shifts away from the tri-band gradient entirely. The GD2000 at £685.08 covers Band 8 calls plus Band 3 EE/Three 4G but omits Band 1 3G, and the GW2000 at £685.08 covers Band 8 calls plus Band 1 all-network 3G but omits Band 3 4G. Either dual-band unit saves £705.30 against the GDW2000, but only when the missing service layer is permanently irrelevant to your site. This guide compares all four units on the same spec, price, gain and network matrix and hands you a decision tree instead of a generic best-of list.

Both tri-band units ship with an 8 dBi weatherproof Yagi directional outdoor antenna, a 5 dBi panel or whip indoor antenna, a 10 m outdoor plus 5 m indoor low-loss coaxial cable with N-type connectors, and an AC 100 to 240 V 50/60 Hz to DC 5 V UK 3-pin adapter. Both weigh 3.0 kg, run from -10°C to +55°C, carry UKCA and CE marks, are Ofcom licence-exempt, and install DIY in 30 to 60 minutes. The difference lives inside the amplifier stage, not in the kit hardware.

The GDW2000 and GDW1000 are the two endpoints of one tri-band family. They tune the identical three FDD bands: Band 8 at 900 MHz for 2G voice calls, Band 3 at 1800 MHz for 4G LTE data, and Band 1 at 2100 MHz for 3G UMTS fallback. They share the same ≥27 dBm maximum output power, the same antennas and the same cable. The only measured differences are the coverage rating, the user rating and the gain budget.

Uplink frequency ranges are identical: 890 to 915 MHz on Band 8, 1710 to 1785 MHz on Band 3, and 1930 to 1990 MHz on Band 1. Downlink ranges are identical too: 935 to 960 MHz, 1805 to 1880 MHz, and 2110 to 2180 MHz. That means the GDW1000 does not miss a single service that the GDW2000 delivers; it simply carries a smaller, lower-gain cell. A buyer who moves from the GDW1000 to the GDW2000 upgrades reach and headroom, never band coverage.

The coverage rating moves from 1000 m² to 2000 m², exactly double. The user rating moves from 100 to 200, exactly double. Uplink gain moves from ≥60 dB to ≥65 dB, a 5 dB step. Downlink gain moves from ≥65 dB to ≥70 dB, another 5 dB step. Output power stays ≥27 dBm on both, which is why this is a scale gradient rather than a power jump: the larger cell is won with extra gain and capacity, not a louder transmitter.

The table below isolates every measured parameter between the two tri-band models so you can see what the £299.77 changes and what it does not.

Reading the table row by row, the rows that change are uplink gain, downlink gain, coverage, users and price. Every other row is identical. That symmetry is the core message of the GDW2000 versus GDW1000 choice: you are paying for a bigger cell, not a different set of services.

The £299.77 figure (1390.38 minus 1090.61) buys four concrete things: a doubled 1000 to 2000 m² footprint, a doubled 100 to 200 user rating, +5 dB uplink gain from 60 to 65 dB, and +5 dB downlink gain from 65 to 70 dB. It does not buy a new band, a louder transmitter, a different antenna or a faster cable, because those are already shared.

The 5 dB downlink gain step matters through structure. Every additional dB of gain absorbs a dB of loss along the coax, through a brick wall, a concrete slab or a steel partition. Five dB extra equals roughly three wall penetrations worth of attenuation budget, which is what lets the larger cell hold four-bar signal at the far edge of a warehouse floor or down a hotel corridor that the GDW1000 would only reach at the near end.

The doubled user rating matters at peak load. The GDW1000 keeps a clean cell for up to 100 active phones; the GDW2000 keeps it for up to 200. A 50-person office during a busy morning rarely touches the GDW1000 ceiling, but a 40-room hotel at breakfast, a warehouse at shift change, or a training centre with visiting delegates pushes past 100 attached devices and starts to throttle on the smaller unit.

On paper, output power is unchanged at ≥27 dBm, so the doubled footprint is delivered through gain and capacity rather than radiated wattage. In practice the 2000 m² figure assumes a reasonably open layout; dense steel or three floors shed 20 to 30 percent, mapping to about 1400 to 1600 m² of hard structure, which still exceeds the GDW1000's 1000 m².

The second axis of the choice is band count. Both tri-band units tune 8, 3 and 1 together; the GD2000 and GW2000 at £685.08 each tune two bands on different pairs. This gap costs £705.30 from either dual-band sibling to the GDW2000 (1390.38 minus 685.08) and £405.53 to the GDW1000 (1090.61 minus 685.08), and it is permanent rather than a scale upgrade.

The GD2000 keeps Band 8 calls on EE, O2 and Vodafone and Band 3 EE/Three 4G, but physically cannot produce Band 1 2100 MHz 3G, the fallback layer that keeps a phone online when 4G drops at a rural edge. The GW2000 keeps Band 8 calls and Band 1 all-network 3G, but cannot produce Band 3 1800 MHz EE or Three 4G. Neither omission can be fixed by adding cable or a better aerial; the missing band requires a second booster.

Both dual-band siblings are rated at 2000 m² on paper, so footprint alone does not separate them from the GDW2000. The separation is service layers and peak users: the GD2000 and GW2000 carry medium-scale ratings rather than the tri-band 200-user capacity, and a growing site that later needs the missing layer buys a second box instead of scaling the first.

The table below turns the four prices into area and capacity ratios so the £299.77 and £705.30 gaps can be judged on actual usage rather than sticker emotion.

The GDW2000 works out cheaper per m² and per user than the GDW1000 once you accept the larger rating, because scale spreads the fixed chassis cost. The dual-band siblings look cheapest per m², but that ratio ignores the missing service layer: a later second booster at £685.08 pushes the all-band total to £1370.16, which sits just below the single GDW2000 at £1390.38 while delivering two boxes, two Yagis and two cable runs instead of one.

Work through these five routes in order; the first route that matches your site gives the answer.

Route 1: EE-only or EE/Three-only office, no 3G reliance

If every phone in the office is on EE, BT, ASDA, Three, iD, Smarty, Plusnet or FreedomPop, and nobody relies on 3G fallback because 4G arrives reliably outdoors, the GD2000 at £685.08 covers calls and Band 3 4G. Choose it only if the team will never host O2 or Vodafone guests needing data and will never move to a rural spot where 3G is the only layer. Otherwise step up to a tri-band unit rather than planning a second box later.

Route 2: O2 or Vodafone calls and 3G, rural depot, no Band 3 4G expected

If the site sits in a village where Band 3 4G has not arrived and the complaint is dropped calls plus slow 3G indoors, the GW2000 at £685.08 keeps Band 8 calls and Band 1 all-network 3G alive. It fails any EE or Three customer expecting 4G streaming, so choose it only when 3G-only data is the agreed expectation and Band 3 4G will never be required.

Route 3: Mixed four-network enterprise, guests on EE, Three, O2 and Vodafone daily

If staff, guests and visitors arrive on all four operators and the site must support calls, 4G and 3G for everyone, only a tri-band unit fits. The GD2000 and GW2000 each drop a layer, and a Band 20 dedicated unit would miss the tri-band stack entirely. Between the two tri-band models, choose by size and peak headcount rather than by operator mix, because both cover all four groups to the same honest limit.

Route 4: 1000 m² versus 2000 m² floor plan

Measure the usable indoor area where signal must hold, then apply the 20 to 30 percent structure discount for stone, steel or multiple floors. A single open office or combined shop around 1000 m² maps cleanly to the GDW1000. A two-storey warehouse plus office block, a multi-wing hotel, a factory floor plus yard office, or anything above about 1400 m² of dense structure maps to the GDW2000. The GDW1000 cannot be expanded to 2000 m² by adding cable or aerial, so under-buying here means a second purchase later rather than a field upgrade.

Route 5: Warehouse versus hotel versus open-plan office

A steel-framed warehouse needs the higher gain budget to punch through racking and concrete, which favours the GDW2000's ≥70 dB downlink for a full floor. A multi-storey hotel needs the 200-user rating at breakfast and check-out peaks plus gain headroom down long corridors, also favouring the GDW2000. An open-plan single-floor office under 1000 m² with fewer than 100 devices fits the GDW1000 cleanly, and an EE/Three-only team on that floor can consider the GD2000 on Route 1.

The matrix below shows the honest per-operator output of all four models. Read it row by row before ordering.

The GDW2000 product page carries 10 verified reviews averaging 4.7 stars (seven five-star, three four-star). Five representative quotes appear below; the recurring theme is zero-bar-to-four-bar recovery and a straightforward 30 to 45 minute install.

James M., 5 stars, 2025-06-15: "Installed the GDW2000 in our 4-bed house in Devon. EE signal went from 0 bars to 4 bars everywhere. 4G data now works indoors for the first time. Took about 45 minutes to install."

Emma R., 5 stars, 2025-08-05: "ASDA Mobile user here. The GDW2000 boosted both calls and 4G perfectly. Small office of 8 people all have signal now. Worth every penny."

Andrew G., 4 stars, 2025-09-15: "Solid booster. Need to make sure the outdoor antenna is properly aligned. Once aligned, performance is excellent. 4G speeds went from 2Mbps to 22Mbps."

Robert H., 5 stars, 2025-09-01: "Rural Wales, EE was unusable indoors. GDW2000 with the outdoor antenna on the chimney gave us 3 bars throughout. 365-day return policy made it risk-free."

Michael T., 5 stars, 2025-08-18: "Best £1390.38 I've spent. Mobile signal was terrible in our new build. The GDW2000 gives us 4-5 bars in every room. Installation was straightforward."

The four-star notes ask for a stronger indoor antenna or the paid 20 m cable on two-storey builds, which matches the optional upgrades rather than a hardware fault; alignment of the Yagi is the single factor buyers mention more than once.

The TCO view shows the dual-band saving dissolves when the missing layer arrives later: two boxes at £685.08 each total £1370.16, just under the single GDW2000, but with doubled hardware and installation. The GDW1000 stays cheapest for a genuinely 1000 m² tri-band site, and the GDW2000 wins the all-band 2000 m² scenario on both day-one and five-year cost.

All four models install DIY in 30 to 60 minutes: mount the Yagi with clear mast line of sight, feed the BS port from the outdoor cable, feed the MS port to the indoor panel, keep the antennas at least 10 m vertically separated, and plug in the UK 3-pin adapter. Automatic gain control trims oscillation and the status LED shows steady green on a clean link.

The Boost4U units carry UKCA and CE marks and are Ofcom licence-exempt, so no annual fee or frequency application is required. Free UK delivery takes 1 to 2 days handling plus 10 to 15 days standard transit, and the 365-day mail return window with refund minus return shipping keeps a business purchase risk-free. Optional 20, 30, 40 and 50 m cable upgrades at +£20, +£30, +£40 and +£50 cover rooftop and gable mounts, a high-gain aerial adds +£50 for weak outdoor readings, and a surge protector adds +£20 for exposed masts.

Check the GDW2000 at £1390.38: Tri-Band 2000 m² 200-User Enterprise Flagship