Picking the construction equipment for your project is where the difference between a smooth operation and a frustrating one is made. Choosing an excavator that’s just too small and you’re going to be stuck spending extra time getting the job done. And then there’s the opposite problem – rent one that’s too large and you could end up shelling out for a machine with way more operating weight than you need.
No matter if you’re digging trenches, clearing land, getting utilities put in, or prepping for major construction, getting a handle on what excavator sizes are out there is going to give you a chance to get it right. At Mountain West Rentals, we’re helping everyday homeowners, contractors and property owners all across Eastern Idaho get the right gear for the job.
Excavator Size Comparison
Mini Excavators (1–6 Tons): Compact Machines for Tight Spaces
Mini excavators – sometimes called compact excavators – are the go-to for smaller jobs or areas where getting in and out is a challenge. Mini excavator sizes are perfect when precision is what matters most, not raw brute power.
Mini and compact excavators work well for:
- Digging irrigations lines
- Installing fence posts
- Doing residential drain work
- Landscaping projects
- Grading your backyard
- Smaller trenching jobs
- Material handling
One of the best things about mini excavators is how easy you can get in and out of tight spots. If you’re working in a backyard, around existing buildings, or in super narrow spaces, these machines can get the job done without tearing up the whole property.
They also tend to be a lot easier to transport and usually come with a lower rental price. So if you have a relatively smaller project, the smallest mini excavator may be all you need.
Medium Excavators (7–20 Tons): The Middle Ground
If your project is just a little bigger, mid-size excavators – sometimes called mini excavators, standard excavators or midi excavators – are probably your best bet. These machines have way more digging power, a longer reach and a higher lifting capacity – but they aren’t too big for most residential or light commercial jobs.
Mid-size excavators are usually used for:
- Foundation prep work
- Installing septic systems
- Trenching
- Land clearing
- Demolition work
- Utility work
It’s often the best all-around choice for contractors or property owners doing bigger projects where a mini excavator just isn’t enough.
Large Excavators (20+ Tons): Built for the Heavy Hitters
If you’ve got a big excavation project, a heavy duty excavator is the way to go. These larger models can move a ton of dirt fast and are usually used on commercial construction projects, roadwork projects and big land developments.
Large excavators are ideal for:
- Deep trenching
- Commercial site prep work
- Road building
- Big demolition projects
- Heavily clearing land
The benefit with these is they can do a job in no time. If you’ve got a big job and need to get it done fast, a full-size excavator can save you a lot of hassle. But for smaller projects, they’re often just more machine than you need.
Before You Rent an Excavator
Choosing the right excavator means knowing the scope of your project. Before you make a decision, you need to answer a few questions.
Just How Deep Do You Need to Dig?
Depth is the biggest factor – a shallow trench or irrigation line isn’t going to need the same machine as a deep foundation excavation.
How’s the Space You’re Working With?
Access matters. Are you going to be working between buildings, fences, or in a tight backyard – in that case, a smaller machine might be your only option.
What Kind of Ground Are You Working Over?
Hard-packed soil, rocky ground, or wet conditions may require a bigger machine with more power.
Are You Lifting Materials?
Some excavators can do more than just dig – if you’re lifting heavy pipe, concrete, or debris, lifting capacity becomes a big deal.
How Quick Do You Need the Job Done?
Sometimes renting a slightly bigger machine makes sense if it lets you finish the job faster.
Common Mistakes When Choosing Excavator Size
A lot of people guess wrong on how much machine they need – or overestimate it.
Some common mistakes include:
- Renting too small and having to waste extra time
- Renting too large for the space
- Failing to think about getting it to the job site
- Overlooking attachments
- Only looking at the price
The cheapest rental isn’t always the best value if it slows down your project.
Get the Right Excavator for the Job
If you’re still not sure what size excavator is right for your project, we’re here to help at Mountain West Rentals. We work with homeowners and contractors all over Idaho Falls, Rexburg, Blackfoot and Chubbuck to match the right equipment to the right job. Serving the East Idaho construction industry and providing the equipment rental you need.