If you’ve been searching about Type 3 ambulance and feel more confused than when you started, you’re not alone. The numbers get thrown around a lot, and honestly, most explanations make it harder than it needs to be.
Here’s the simple version:
A Type 3 ambulance is a modular ambulance. That means it’s built on a cutaway van chassis – basically a truck cab with the rest of the van body cut off – and then a separate patient module is bolted onto the back.
Think of it as a pickup truck cab pulling a box. Except the box doesn’t detach. It’s permanently mounted.
At Infinity Chassis Units, we’ve been building these for years. We know what works and what doesn’t.
Type 1 vs Type 2 vs Type 3: Let’s Clear This Up
This is the question everyone asks. So here’s the simple breakdown:
| Type | What It Looks Like | Based On | Best For |
|---|---|---|---|
| Type 1 | Pickup truck with a box on the back | Heavy-duty truck chassis | Rough roads, rural areas, lots of equipment |
| Type 2 | A big van with a raised roof | Standard van (like Ford Transit) | City streets, basic transport, lower cost |
| Type 3 | Truck cab + separate patient box | Cutaway van chassis | The sweet spot – room to work without driving a monster |
Type 3 gives you the best of both worlds: more patient space than a Type 2, but better maneuverability than a Type 1.
Most services we talk to end up choosing Type 3. It’s just the most practical choice for everyday EMS work.
Why Do So Many People Search for Type 3 Info?
Lots of people search for “type 3 ambulance” every month. But they’re often not finding what they need.
Here’s what they’re actually looking for:
- “What exactly IS a Type 3?” (You’re reading it)
- “Who makes good ones?” (We do, but more on that later)
- “What are the dimensions?” (Got that covered)
- “Type 1 vs Type 3 – which should I buy?” (Let’s settle this)
Type 3 Ambulance Dimensions: How Much Room?
If you’re looking at a Type 3, you care about space. Here’s what you’re working with:
| Measurement | Typical Range |
|---|---|
| Overall Length | 22 – 24 feet |
| Overall Width | 8 – 8.5 feet |
| Patient Compartment Length | 12 – 14 feet |
| Patient Compartment Headroom | 6’2″ – 6’4″ |
That patient compartment is big enough for two attendants to work comfortably, with room for a stretcher, monitor, ventilator, and all your gear.
Why this matters: When you’re working on a patient, you don’t want to be bumping elbows. Type 3 gives you that space.
What Chassis Work with Type 3 Ambulances?
The chassis is what you drive. The box is where you work. Here are the most common options:
Ford Transit
The Ford Transit cutaway is probably the most popular Type 3 platform right now. Crews like the way they drive. Mechanics like working on them. Parts are everywhere.
Ram ProMaster
The ProMaster has been gaining ground. Front-wheel drive gives it a lower floor, which crews appreciate. It’s also a bit wider inside the cab.
Chevrolet
Chevy offers the 4500 and 5500 chassis. Less common than Ford, but people who run them tend to stick with them.
Mercedes-Benz Sprinter
The Sprinter is the premium option. Smoother ride. Nicer cab. But they cost more and parts cost more.
At Infinity Chassis Units, we work with whatever chassis makes sense for your service. We don’t push one brand. We build on what works for you.
What’s Inside a Type 3 Ambulance?
The interior is where the work happens. Here’s what you’ll find in a typical Infinity Chassis Type 3:
- Squad bench: Seating for crew, facing the patient
- CPR seat: Forward-facing behind the driver
- Stretcher mount: Center-mounted, secure, accessible from all sides
- Airway seat: Behind the passenger, right where you need it
- Cabinetry: Overhead and below, with all the storage you need
- Suction and oxygen: Built-in, plumbed to where you work
- Electrical system: Controls for lights, HVAC, everything
- Scene lighting: So you can see what you’re doing at night
We’ve talked to hundreds of paramedics and EMTs about what works and what doesn’t. Every cabinet placement, every switch location – it’s all based on real feedback from people who spend their shifts in these trucks.
Type 1 vs Type 3: Which One Makes Sense for You?
This is the big question. Here’s how we help customers think about it:
Type 1 might be right if:
- You work in rural areas with rough roads
- You carry an unusual amount of equipment
- You need maximum durability for tough conditions
Type 3 might be right if:
- You work in mixed urban and suburban areas
- You want good maneuverability
- You want more room to work in the back
- You want a smoother ride for your crew
Most services choose Type 3. It’s not the biggest. It’s not the smallest. It’s just right for most situations.
Type 2 vs Type 3: The Other Comparison
Type 2 might be right if:
- Budget is your main concern
- You mostly do transfers, not emergency calls
- You need to fit in tight spaces
- You don’t carry a lot of gear
Type 3 might be right if:
- You run emergency calls regularly
- You carry ALS equipment
- You want room to actually work
- You need flexibility for different types of calls
A Type 2 is a van. A Type 3 is a purpose-built ambulance. There’s a difference.
What About Type 4? Type 5?
Sometimes people ask about Type 4 or Type 5 ambulances. Those aren’t standard categories in the US system.
Officially, there are three types: Type I, Type II, and Type III. That’s it. That’s what the industry uses.
Everything else is just variations on these three.
Why Infinity Chassis Units for Your Type 3 Ambulance?
Look, there are a lot of companies that can bolt a box onto a truck. That’s not who we are.
Here’s what makes us different:
We Listen First
Before we build anything, we want to know about your service. How many calls do you run? What’s your territory? What do your crews complain about in their current trucks? What works well that you want to keep?
We Build for Real People
We don’t design ambulances in a vacuum. We talk to paramedics. We talk to EMTs. We talk to mechanics. We ask what drives them crazy and what they love. Then we build that.
We’ve Been Doing This a While
Twenty-five years of building mobile medical units. We’ve put them in the desert and the Arctic. We’ve learned what breaks and what doesn’t. We build on that experience.
We Stand Behind Our Work
When you take delivery of an Infinity Chassis Type 3 ambulance, you’re not just getting a vehicle. You’re getting a relationship. We’re here when you need us.
We Customize
No two services are exactly alike. Your Type 3 shouldn’t be either. We build to your specs, your needs, your budget.
The Bottom Line
A Type 3 ambulance is the most practical choice for most EMS services. It gives you room to work, drives well, and fits in most places you need to go.
At Infinity Chassis Units, we’ve built more of them than we can count. We know what works. We know what lasts. And we know how to build one that fits your service like a glove.
If you’re thinking about a Type 3 ambulance, we should talk. Not about sales. Just about what you need. Then we’ll figure out together whether we’re the right fit for each other.
Because at the end of the day, the best Type 3 ambulance is the one that works for your people and your patients.
Infinity Chassis Units
Mobile Medical Vehicles Built for Real Work
