Software for the yard running ground thaw heaters.

A ground thaw heater is not a space heater on wheels — it is a hydronic system that warms the dirt itself. A burner heats glycol, a pump pushes that fluid through a long run of heat-transfer hose snaked across the work area, and insulated blankets hold the heat down where it thaws frozen ground or cures a slab from below. That is a different animal to run as a rental. The job is measured in days and square footage, not minutes; the hose and blankets are as much a part of the rental as the unit; and the glycol loop has to survive the same cold it is fighting. These units sit idle for months, then every one of them goes out the same freezing week. EquipFlow runs them the way the yard that built it runs them — dispatch, fuel and standby billing, maintenance, and return inspection on one record per unit.

Built inside Rental King, right now.

Rental King is a heavy-equipment rental yard in Odessa and Midland, TX. They run ground thaw heaters, manlifts, forklifts, light towers, generators, compressors, and water trucks on MSA contracts through the Permian Basin — 24/7, oilfield pace. EquipFlow was designed and first deployed inside that yard. Every feature was tested against their live operation before it shipped. The product runs there today.

A ground thaw heater is a long-duration, accessory-heavy, fuel-hungry rental, and every one of those traits is a place revenue slips out. The hose and blankets that walk off and never get charged are gone; the fuel burned over days of unattended running, if it never lands on the invoice, is gone; a unit holding ground frost-free between pours earns nothing if the standby days are not marked. The hour meter ties maintenance and billing together, so it has to be captured the same way every return. When dispatch, billing, maintenance, and inspection all read from one unit record, the dispatcher quotes the right rate with the full hose and blanket set, the mechanic services and tests the glycol against real run hours, the fuel and standby lines land on the invoice, and the bookkeeper closes a busy winter month without rebuilding it from memory. That single-record discipline is what keeps a seasonal thaw fleet from leaking its best revenue exactly when it is busiest.

Ground Thaw Heater specs the rental record tracks.

Every number below is a sourced specification range. The render layer is the only path these values reach the page — they live on the unit record, not in a dispatcher's head.

Ground thaw capacity (standard hose)

1100-3000ft2

Gross heating power (burner input)

126000-385000BTU/h

Heat-transfer hose length

1100-3000ft

Heat-transfer fluid (glycol) capacity

50-122US gal

Diesel fuel tank capacity

72-222US gal

Max heat-transfer-fluid operating temperature

180F

Pump flow rate per circulation loop

265US gal/h

How EquipFlow handles ground thaw heaters on the dispatch board.

Ground thaw demand is seasonal and lumpy: nothing for months, then every contractor in the area wants a unit the same week the first hard freeze lands. The dispatch board is built for that wall of overlapping winter orders rather than a steady flow, and each unit shows on the driver-by-hour view with its delivery window, on-site status, and due-back date on one responsive screen at any hour. The hose and blankets are where ground-thaw dispatch goes wrong. The unit is useless without the full reel of heat-transfer hose, the insulated blankets to cover it, and the glycol topped off, so the dispatcher confirms hose length, blanket count, and fluid level on the rental record before the truck rolls. Fuel level at delivery is noted on the same record so there is no argument later about how full the tank went out. A slab cure or a deep thaw ties a unit up for days, not hours, so the board flags the conflict at assignment when the same unit gets promised to two jobs in the same window, not at the gate when a driver is already loaded.

Billing ground thaw heaters — MSA, standby, and site-level tax.

Most oilfield and contractor thaw demand runs on MSA terms, so the negotiated rate override lives on the customer record per equipment class rather than in a sheet the dispatcher keeps in their head, and a ground-thaw rental created for that account picks up the right rate on its own. Two wrinkles separate this from plain equipment billing. Fuel is one: the unit burns through its tank running unattended for days, so refills and any fuel surcharge ride the same invoice as the rental rather than landing in a separate ledger. The duty cycle is the other: thaw and cure jobs run by the day or the week, and a unit left holding frost-free ground between pours, or sitting through a warm spell while the job waits, is billable standby at a rate separate from active days. The dispatcher marks it and the invoice carries both lines without a month-end rebuild. Delivery, pickup, hose, and blanket charges ride along too. Tax jurisdiction is set on the delivery-site record, so a unit that crossed a county line still bills the right rate. Invoices post to QuickBooks Online on close.

Maintenance on ground thaw heaters.

Ground-thaw PM is hour-meter driven, not calendar driven, because a unit running around the clock on a long cure stacks hours in days while a spare waits out the off-season untouched. The hour reading posts when the return inspection records it, and the maintenance module advances the PM clock from that reading so the next service lands on real run time. The service is its own discipline, and the hydronic loop is most of it: the glycol mix has to be tested and corrected so the heat-transfer fluid does not lose its own freeze protection, the circulation pump and its seals carry the whole job, and the hose has to be flushed and checked for the kinks, cuts, and internal scale that throttle flow. On the burner side the nozzle, fuel filter, flame sensor, and ignition all drift with hours and dirty fuel. Work orders, parts, and meter history live on the unit record, which is also where a damaged-hose or contaminated-glycol charge from a return inspection becomes a repair ticket.

Ground Thaw Heater return inspections.

Two inspection rhythms apply. While the unit is on rent the customer runs the operating check — glycol level and the hose laid out without kinks, the blankets covering it, the burner firing clean, and fuel in the tank — and that responsibility sits with them. The yard's own control is the return inspection. Before a ground-thaw heater comes off rent, the driver runs a mobile-web checklist on a phone with no app install, records the hour-meter reading, and attaches required photos that cannot be skipped. The checks that carry the weight here are hydronic: the full length of heat-transfer hose reeled back on and inspected for cuts and crush damage, the glycol level and condition and whether it came back diluted or contaminated, pump and fitting integrity, the burner and fuel tank, and the blankets returned and accounted for. The inspection ties to the rental record before the truck leaves the site, so a dispute over a cut hose or a short blanket count has photos and a timestamp behind it.

Common ground thaw heater classes in the field.

The product, the same way it runs for ground thaw heaters.

The sections below are the EquipFlow modules that matter most when running ground thaw heaters — each links to the full feature detail.

Operator guides for running ground thaw heaters.

Field-tested playbooks that go deeper on pricing, dispatch, billing, and maintenance for fleets like this.

• Adding a New Equipment Category to Your Yard →
• Air Quality Equipment Rentals →
• Compressed Air Equipment Rentals →
• Equipment Rental for Industrial Maintenance Shutdowns →

What you give up running ground thaw heaters in EquipFlow.

EquipFlow is a web app, so the return inspection needs a signal to load. On a remote winter pad with no coverage the driver cannot finish the mobile inspection at the site, and most yards run it at the yard on return instead, so the glycol reading and hose photos land a little later than ideal. There is no built-in telematics or remote loop-temperature monitoring today, so run hours and fault state are not pulled automatically — the hour meter is read at return. Tracking each length of hose and every blanket as its own serialized asset is not automatic either; most yards manage them as a checklisted accessory set on the rental. And the rate logic is built around the MSA, fuel, and standby model the oilfield runs on, so an unusual fuel-included or flat-rate structure should come to the demo to be scoped honestly.