Call, message or send the form
Tell Craig about the air conditioning outdoor unit, approximate size and postcode. You do not need a finished specification to start.
Specialist foundation installation
Air Conditioning Outdoor Unit Bases
An outdoor AC unit needs a stable mount that keeps the condenser clear of standing water and leaves room for airflow and servicing.
50+ years
Family groundwork experience
Full 10-year
Written JustBases guarantee
Call Craig directly
Friendly practical advice
One clear price
Written foundation scope
Still comparing the options? What is the best base for an outdoor air conditioning unit?
Start with what you want to build
The right foundation for your air conditioning outdoor unit
Outdoor condenser units can become noisy or difficult to maintain if they are left on an uneven or cramped platform. Their feet, pipe entry and required clearances vary between models.
Model-specific footprint
Mounting centres and service-panel positions should be known before the base is set out.
Explore the details →Stable levelling
A settled pad helps the installer maintain the equipment in its intended orientation.
Explore the details →Free airflow
The surrounding wall, planting and screens must respect the supplier's clearances.
Explore the details →Water control
Rain and condensate should not collect around the feet or discharge across a path.
Explore the details →Three easy steps
From first call to a finished foundation
Getting started is simple. We will guide you through the choices and explain any information needed before installation.
Talk through the options
We discuss the site and suitable foundations, identify any supplier information needed and provide a clear written quotation.
Install and hand over
Our team marks out and installs the agreed foundation, with the required checks before the next stage of your project.
Choose the foundation, not the complication
Foundation options for your air conditioning outdoor unit
These are the methods worth assessing for this application. The structure, support plan and actual ground determine the right choice—not a one-size-fits-all specification.
Concrete
Concrete foundation
A small equipment pad provides durable support for proprietary feet or an installer-specified frame.
Worth considering for: Permanent domestic and light-commercial condenser units
Ask about this option →
Paving slabs
Paving-slab base
A heavy-duty proprietary slab or prepared paving base can suit selected units where approved by the installer.
Worth considering for: Compact condensers in accessible garden positions
Ask about this option →
Installed ground screws
Ground screws and support frame
Screws may support a raised equipment frame on a slope, subject to the equipment designer's acceptance and suitable ground.
Worth considering for: Special locations where a conventional pad is awkward
Ask about this option →Clear prices, agreed scope
A price for your project
Specialist foundations need a quotation matched to the structure, ground and installation scope. A generic garden-building price would not reliably represent this project. Call Craig with your idea and postcode to get started.
No VAT is added to the guide prices shown.
Get your exact written priceView the full base price guideThe structure
Its loads, footprint and accepted support arrangement.
The site
Ground conditions, levels, buried services and practical access.
The foundation package
Specified materials, installation and any agreed testing or supporting frame.
The written quotation
Clear inclusions, responsibilities and timing before work is booked.
Easy to start, free to ask
Tell us about your air conditioning outdoor unit
You do not need drawings or a finished specification before getting in touch. Send what you have and Craig will explain the useful next step.
Helpful details, if available
- Condenser make and model
- Mounting centres
- Clearance diagram
- Condensate route
- Number of units
Talk to Craig
Craig will listen to what you are planning and help establish the foundation information that matters.
Online quote requests are normally answered within 24 hours, excluding weekends.
Request your free quote
Just give us your contact details and a short description of what you want to build. We will guide you through the rest.
Your enquiry
Air Conditioning Unit Bases installation
Planned around its use
What matters for your air conditioning outdoor unit
We prepare the agreed ground base for the air-conditioning installer, coordinating levels and condensate or surface drainage without undertaking refrigerant or electrical work.
Discuss your project with Craig →Model-specific footprint
Mounting centres and service-panel positions should be known before the base is set out.
Stable levelling
A settled pad helps the installer maintain the equipment in its intended orientation.
Free airflow
The surrounding wall, planting and screens must respect the supplier's clearances.
Water control
Rain and condensate should not collect around the feet or discharge across a path.
When the design and ground are suitable
Why consider ground screws?
Year-round flexibility
A screw-only foundation avoids pouring and curing concrete, reducing one source of weather-related delays. Unsafe access, flooding, frozen or unsuitable ground can still mean postponing installation.
Less digging and mess
Localised supports can reduce excavation and spoil compared with extensive concrete foundations. Clearance, pre-drilling, service trenches and machinery access may still disturb the site.
A lower-impact approach
Using less concrete and moving less spoil can reduce material use and transport. Retaining vegetation may benefit habitats, but trees and wildlife still need protection. Steel manufacture and the full project design matter to any carbon comparison.
Before installation
Dimensions, approvals and responsibilities
Ask the AC installer to confirm the unit position, mounting system, clearances and condensate route first. Screening added later can obstruct airflow.
Multiple condensers may need a larger coordinated plant area rather than separate improvised slabs.
JustBases quotes the agreed foundation and groundwork. Product installation, specialist connections, commissioning and third-party design remain outside our scope unless the written quotation expressly includes them.
Genuine customer feedback
A full 10-year JustBases guarantee
Our full written guarantee covers installation workmanship and the foundation materials we supply, subject to your quotation. Read what customers say about our foundation work below, with the original job types and sources shown.
"I couldn't recommend Craig highly enough! Communication prior to the job was outstanding even considering our ever changing goal posts. Craig and his team turned up exactly at the agreed time, were well presented, friendly and professional. The cleanliness, attention to detail and quality of the job was outstanding."
— Verified Customer
Checkatrade · BH16 · 2020-05-27
Work listed by the source: Log cabin foundation
"Good standard of workmanship. Friendly and efficient. Prompt response for estimate and fitted into our timescale. Will be using the firm in future and thoroughly recommend them."
— Verified Customer
Checkatrade · SP6 · 2019-09-16
Work listed by the source: Concrete base for new summerhouse
"Craig and his team were very professional throughout the job. They worked tirelessly and extremely hard. The job involved digging up a thick reinforced concrete base. Then creating a whole new base with precision engineering in preparation to accept a new building on top. The result was an excellent job all round."
— Verified Customer
Checkatrade · BH24 · 2021-11-30
Work listed by the source: Building foundations and landscaping
Our service area
Foundation installation across the South
For this application we cover Dorset, Hampshire, South Wiltshire. Tell Craig the postcode and we will confirm the suitable installation options and travel requirements.
Straight answers before you decide
Air Conditioning Unit Bases FAQs
Yes. A shared plant pad can be set out once the installer confirms spacing, access and pipe routes.
Still unsure? Send Craig a short enquiry and we will help with the next step.
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Explore this application →Tell us what you want to build
An outline of the project and your postcode are enough to start.