Will this drain my starting battery?

No! We recommend installing a battery isolator to protect your starting battery. The AC runs on your house batteries.

How long does it run on batteries?

With a 400 Ah battery bank, expect 6-10 hours of runtime depending on ambient temperature.

Can I install this myself?

Yes! If you're comfortable with basic electrical work and power tools, DIY installation takes 4-6 hours.

Does this work with solar panels?

Absolutely! We recommend 400-800W of solar panels for optimal off-grid performance.

B-COOL X7RM 12V 24V DC rooftop air conditioner with PTC heating — no-idle 4-season AC for trucks and heavy equipment

B-COOL X7RM | 12V & 24V DC Powered Air Conditioner with PTC Heating

Name: B-COOL X7RM | 12V & 24V DC Powered Air Conditioner with PTC Heating
Brand: B-COOL AIR CONDITIONERS
SKU: BC-X7RM
Price: 1.00 CAD
Availability: InStock

Contact Us to Request Pricing

The B-COOL X7RM is the only unit in the B-COOL lineup that both cools and heats — making it the go-to choice for operators who need 4-season climate control without idling the engine. Powered by 12V or 24V DC, it runs entirely off your battery system with no shore power, no generator, and no fuel burn.

In cooling mode the X7RM delivers 400 m³/h of airflow — the same output as the 5RM but with the added capability of PTC electric heating, which warms the cab quickly and efficiently on cold mornings, during pre-trip warmups, or anywhere anti-idling regulations apply.

At 48 lbs with the same 27.5 x 27.5 in rooftop footprint as the 5RM, the X7RM installs on the same roof cut and fits the same vehicles — giving you a direct upgrade path from cooling-only to full 4-season climate control.

📄 Download Full X7RM Spec Sheet

Specification	12V	24V
Current Draw — Cooling (Min – Max)	40 – 75A	11 – 40A
Current Draw — PTC Heating (Min – Max)	40 – 75A	11 – 40A
Evaporator Airflow	400 m³/h	400 m³/h
Noise Level	68 dB	68 dB
PTC Heating Max Temp	113°F (45°C)	113°F (45°C)
Refrigerant	R134a	R134a
Roof Cut Size	13.78 x 7.87 in	13.78 x 7.87 in
Unit Weight	48 lbs	48 lbs
Exterior Dimensions	27.5 x 27.5 x 5.9 in	27.5 x 27.5 x 5.9 in
Standard Power Cable	6m (20ft)	6m (20ft)
Optional Power Cable	10.5m (35ft), sold separately	10.5m (35ft), sold separately

B-COOL X7RM Rooftop Air Conditioning & Heating Unit (pre-charged, ready to install)
Remote Control
Rubber Gasket
Support Brace x1
Decorative Panel (optional interior finish)
Install Screws & Hardware Kit
Standard Power Cable — 6m (20ft)

Unit comes pre-charged with R134a refrigerant. No vacuum pump or refrigerant equipment needed for installation.

Optional: 10.5m (35ft) power cable available separately from our Parts Department.

📄 Download Full X7RM Installation Manual
https://cdn.shopify.com/s/files/1/0715/1140/8684/files/1._X7RM_-_INSTALLATION_MANUAL_-_2026_-_FINAL.pdf?v=1772665201

The X7RM is a self-contained rooftop unit — compressor, condenser, evaporator, and PTC heating element all housed in one unit that mounts on top of the vehicle. No refrigerant lines to run. No separate condenser to mount. The unit ships pre-charged with R134a and is ready to run straight out of the box.

The X7RM uses the same 13.78 x 7.87 in roof cut as the 5RM — making it a direct drop-in upgrade for any vehicle already fitted with a 5RM opening.

Professional installation required.

Step 1 — Cut the roof opening
Cut a 13.78 x 7.87 in (35 x 20 cm) rectangular opening in the roof. If upgrading from a 5RM the existing opening is the correct size — no re-cutting required. Measure twice before cutting.

Step 2 — Prepare the mounting surface
Apply the rubber gasket and sealant around the opening to create a weatherproof seal.

Step 3 — Set the support bolts
Adjust the support bolts to the correct height for your specific roof thickness before setting the unit.

Step 4 — Mount the unit
Set the X7RM onto the roof opening and secure it with the included support brace.

Step 5 — Connect the control panel wiring
Run the control panel wiring through the roof and connect to the interior control panel.

Step 6 — Connect power
Run the power cable to your 12V or 24V battery bank. Connect positive first. The standard cable is 6m (20ft). An optional 10.5m (35ft) cable is available from our Parts Department if needed.

Step 7 — Set low voltage protection
Before first use, program the voltage cutoff to protect your battery system:

12V systems: set cutoff between 9V – 12V
24V systems: set cutoff between 19V – 24V

Step 8 — Finish interior
Install the optional decorative panel on the interior ceiling for a clean finish.

Step 9 — Power on
Turn the unit on and verify both cooling and heating modes operate correctly.

📄 Download Full X7RM Operating Manual
https://cdn.shopify.com/s/files/1/0715/1140/8684/files/2._X7RM_-_OPERATING_MANUAL_-_2026.pdf?v=1772665200

Inside Control Panel — 4 Buttons

Button A: Power on / off
Button B: Mode — cycles through Cooling / PTC Heating / Fan Only
Button C (▲): Increase airflow level / increase temperature set point
Button D (▼): Decrease airflow level / decrease temperature set point

Remote Control

Power on / off. Temperature range: 60.8°F – 89.6°F (cooling) / up to 113°F (PTC heating).

Cooling modes:

High — default 60.8°F, Level 6 airflow
Medium — default 78.8°F, Level 4 airflow
Low — default 82.4°F, Level 3 airflow
Auto — default 78.8°F, Level 4 airflow
Fresh Air — fan only, compressor off. Circulates and ventilates without active cooling or heating.

PTC Heating mode:

Activates the PTC electric heating element
Heats cab up to 113°F (45°C) set temperature
Runs entirely on DC battery power — no engine idling required
Ideal for cold morning pre-trips, rest stops in cold climates, and anti-idling compliance in winter

Airflow: 6 adjustable levels via remote or control panel.

Display button: turns the interior cab display on or off — useful at night in a sleeper cab.

Low Voltage Protection

The X7RM includes programmable voltage cutoff to protect your battery system from deep discharge.

12V systems: set cutoff between 9V – 12V
24V systems: set cutoff between 19V – 24V

When battery voltage drops to the cutoff threshold the unit shuts off automatically to prevent battery damage.

The X7RM is the right unit if:

You drive a semi truck, sleeper cab, or long haul truck through regions with cold winters and hot summers — the X7RM handles both without idling the engine
You need a no-idle heater as much as a no-idle air conditioner — the PTC heating element runs entirely off DC battery power, keeping the cab warm during rest stops, pre-trips, and extended stops in cold weather
You operate heavy equipment in climates where operators need heating in the morning and cooling by midday — the X7RM switches between modes instantly
You want a direct upgrade from the 5RM — same roof cut size, same footprint, just with 4-season capability added
You're anti-idling compliant year-round — in cold climates, idling for heat is just as much of a regulatory and cost issue as idling for cooling
You need an aftermarket 12V or 24V heater and air conditioner in a single rooftop unit

The X7RM is the only unit in the B-COOL lineup with PTC heating. If you only need cooling, consider the 5RM (same footprint, lower cost) or the 6RM (quieter, lower amp draw). But if you need heat and cool in one unit powered entirely by DC battery, the X7RM is your only option in our lineup.

Applications

Trucking & Transportation — semi trucks, sleeper cabs, long haul trucks operating in cold climates, day cabs requiring year-round climate control, tanker trucks, flatbed trucks — anti-idling compliance in both summer and winter

Heavy Equipment — excavators, bulldozers, wheel loaders, cranes, mining equipment operating in variable climates — heating in the morning, cooling by midday

Agriculture — large cab tractors and harvesters in regions with cold mornings and hot afternoons — eliminates the need for idling in both seasons

Fleet Operations — mixed-climate fleets where a single unit needs to handle year-round conditions without engine idling

Emergency Services & Military — field vehicles and command units operating in cold climates where DC-powered heating without idling is operationally critical

What is PTC heating and how does it work?
PTC stands for Positive Temperature Coefficient. It is an electric heating element that generates heat directly from DC battery power — no combustion, no fuel, no engine required. The X7RM's PTC element heats the cab up to 113°F (45°C) set temperature, running entirely off your 12V or 24V battery system.

Is the X7RM the only B-COOL unit with heating?
Yes. The X7RM is the only unit in the entire B-COOL lineup that includes a heating mode. All other units are cooling-only.

Does the X7RM work on both 12V and 24V systems?
Yes. The X7RM is available in both 12V and 24V configurations. Select your voltage when ordering. The unit is wired for one voltage — it is not a dual-voltage unit.

Can I upgrade from a 5RM to an X7RM without cutting a new hole?
Yes. The X7RM uses the identical 13.78 x 7.87 in roof cut as the 5RM. If your vehicle already has a 5RM installed, the X7RM drops into the same opening with no re-cutting required.

Does it come pre-charged?
Yes. The X7RM ships pre-charged with R134a refrigerant and is ready to install. No vacuum pump or refrigerant equipment needed.

Is this unit compliant with anti-idling regulations?
Yes — in both cooling and heating modes. The X7RM runs entirely on DC battery power with no engine idling required, making it fully compatible with anti-idling laws and idle reduction programs across North America in all seasons.

What size hole do I need to cut?
13.78 x 7.87 inches (35 x 20 cm) — identical to the 5RM. Measure twice before cutting.

How does the X7RM compare to the 5RM?
Same rooftop footprint, same roof cut, same airflow (400 m³/h), same noise level (68 dB). The X7RM adds PTC electric heating capability and weighs 8 lbs more (48 lbs vs 40 lbs). If you only need cooling, the 5RM is the simpler and lower-cost option. If you need year-round climate control, the X7RM is the upgrade.

What battery bank do I need?
At 12V, the X7RM draws between 40 and 75 amps in both cooling and heating modes. Contact our technical support team to size your battery system correctly for your runtime requirements.

What if I need replacement parts?
All X7RM components are stocked with dedicated part numbers. Contact our Parts Department at adrian@dcpowersales.com or 778-679-4999.

When you buy from B-COOL, you're not buying from an Amazon storefront with no support. You're buying from the team that wrote the installation manual, stocks the replacement parts, and answers the phone.

Sales & Inquiries
📧 sales@dcpowersales.com
📞 778-590-5000

Technical Support
📧 adrian@dcpowersales.com
📞 778-679-4999

Parts Available in Canada & United States. We stock all parts - compressor, control board, condenser fan assembly, evaporator, blower motor, louver motor, all hoses, hardware and more.

Every other brand lists BTU numbers. We don't, and here's why.

BTU ratings in the 12V and 24V air conditioner market are tested in controlled lab conditions and competitors go with their favourite testing company and tend to use those results that depicts them the "best". Real-world performance — inside a truck cab or RV sitting in the sun at 100°F+ — is a completely different story. The numbers you see on competitor listings are inflated, and we are not willing to publish figures that mislead the people who depend on this equipment to stay safe and productive.

Lower amp draw means longer battery runtime. For operators running on batteries overnight, during rest breaks, or in anti-idling zones, the 6RM stretches your power further than any other rooftop option in our lineup.

Compare All B-COOL Models

Model	Noise	Weight	Airflow	12V Amps	24V Amps	Special Features	Availability
5RM	68 dB	40 lbs	400 m³/h	40 – 75A	11 – 40A	Lightest rooftop, simplest install	Available to Purchase Online
X7RM	68 dB	48 lbs	400 m³/h	40 – 75A	11 – 40A	Cooling + PTC heating (4-season)	Pricing Upon Request
6RM	38 dB	60 lbs	310 m³/h	30 – 60A	8 – 33A	Quietest small rooftop, lowest amp draw, auto-swing louver	Pricing Upon Request
9RM	38 dB	77 lbs	350 m³/h	30 – 70A	8 – 38A	Capillary tube, large cab coverage	Pricing Upon Request
12RV	28 dB	77 lbs	350 m³/h	30 – 70A	8 – 38A	Quietest unit overall, RV square cut, internal filters	Pricing Upon Request
12RM Dual Fan	48 dB	99 lbs	400 m³/h	35 – 85A	10 – 45A	Dual fan, most modes, Hybrid Control Panel optional	Pricing Upon Request
YTRM	48 dB	99 lbs	460 m³/h	35 – 85A	10 – 45A	Highest airflow, yard truck built, ignition cut-off	Pricing Upon Request
FLEX ST	48 dB	53 lbs	350 m³/h	35 – 65A	10 – 35A	Flexible hose routing, split system	Available to Purchase Online
FLEX QC	48 dB	53 lbs	350 m³/h	35 – 65A	10 – 35A	Quick Connect, split system, 100A fuse included	Pricing Upon Request
WMB ST	48 dB	44 lbs	350 m³/h	35 – 65A	10 – 35A	Wall/side mount, no roof cut needed	Available to Purchase Online
WMB QC	48 dB	44 lbs	350 m³/h	35 – 65A	10 – 35A	Quick Connect, wall/side mount, 100A fuse included	Pricing Upon Request