2050 County 41 NW, Backus, Minnesota
Frozen ground does not have to freeze your schedule. BCI Rentals stocks Wacker Neuson hydronic ground heaters covering 2,500 to 10,000 sq ft, along with the curing blankets, glycol, and hose accessories that make them work in real northern Minnesota winters. Based in Backus, we serve contractors and crews across the Brainerd Lakes and Bemidji area with flexible delivery and pickup options that get the unit exactly where you need it.
A hydronic ground heater warms a 50 percent propylene glycol solution and circulates it through hose laid in loops across the work area. Covered with insulated blankets, the hose transfers steady, even heat downward, thawing frost ahead of excavation or holding a fresh concrete pour at curing temperature. Because the heat is closed loop and flameless at the surface, there is no open combustion over your slab, no fumes in an enclosure, and no hot spots that flash-dry concrete. It is the method specified on most cold weather concrete work for a reason.
Match the heater to the area you need to thaw or cure. When in doubt between two sizes, go up: extra capacity shortens run time and gives you slack for deep frost.
| Unit | Coverage | Best fit |
|---|---|---|
| 2,500 sq ft Ground Heater (Wacker E1250) | Up to 2,500 sq ft | Footings, frost-protected slab sections, utility repairs, residential foundations |
| 6,000 sq ft Ground Heater (Wacker E3000, STD generator) | Up to 6,000 sq ft | Commercial slabs, larger foundations, multi-zone thaw |
| 6,000 sq ft with lift bail (STD generator) | Up to 6,000 sq ft | Same coverage with crane or telehandler placement on tight sites |
| 6,000 sq ft with lift bail (EXT service generator) | Up to 6,000 sq ft | Extended unattended runs between service visits |
| 10,000 sq ft Ground Heater (Wacker E5000) | Up to 10,000 sq ft | Large commercial pours, big box slabs, phased sitework |
The same machine does both jobs, set up differently. For ground thaw, hose is spaced tighter and run until the frost releases, with progress depending on frost depth, soil type, and moisture content. Deep frost in mid winter takes longer than an early season crust, so build thaw days into the schedule ahead of your dig date. For concrete curing, hose or blankets hold the slab in the temperature range where cement hydrates properly, protecting early strength gain through the critical first days. Insulated curing blankets over the top dramatically cut heat loss and fuel use in either mode, and on milder pours blankets alone may carry the load.
Thawing ahead of excavation for foundations, footings, and utility repairs. Curing slabs, walls, and flatwork poured between November and March. Frost prevention on prepared subgrade waiting for a pour window. Whether you are a contractor holding a winter schedule or an individual getting a building pad ready for spring, the right heat package keeps the project on the calendar instead of waiting for it.
Planning winter concrete or a cold season dig? Browse ground heaters with live availability, see the full temporary heat and ground thaw guide, or contact our team to size the unit for your square footage.
How long does it take to thaw frozen ground?
It depends on frost depth, soil type, and moisture. Shallow early season frost can release in a day or two, while deep mid winter frost takes longer. Tell us your dig date and frost conditions and we will help you plan the run time.
Do I need blankets with the heater?
Strongly recommended. Insulated blankets over the hose runs hold heat where it belongs, shorten thaw times, and cut fuel use. For slab curing they are essential.
What fuel do the heaters run on?
Our Wacker Neuson units are diesel fired with onboard generators, so they run self-contained where the work is. Add the 550 gallon fuel tank for extended runs.
Is glycol included?
The system runs on 50 percent propylene glycol, stocked in sizes from 5 gallon pails to 270 gallon totes. We will help you estimate volume for your hose layout when you reserve.
Where do you deliver?
We offer flexible delivery and pickup options across the Brainerd Lakes and Bemidji area, including Brainerd and Baxter, Bemidji, Walker, Park Rapids, and Grand Rapids.