Comfort is more than cold air.
We assess and plan residential air conditioning, ventilation, indoor air quality, and electrical requirements around your home, usage, and operating priorities.
Three questions come before the equipment
A good installation starts with the room, not the product. How much heat does the room actually gain? Where will fresh air come from? And can the electrical supply, and any inverter or generator behind it, carry the unit safely? We answer those first.
Cooling load
Set by a site assessment of each room, not by floor area alone.
Fresh air
A split air conditioner recirculates room air. Ventilation is a separate job.
Electrical supply
Correct circuits, protection and isolation for each unit.
Air conditioning, ventilation and air quality
Pick a category to see how each system works, where it is commonly used and what to consider. None of these is best for every home.
Systems that cool, and in some cases dehumidify, indoor air. Each has a different operating concept, level of installation complexity and set of trade-offs, and none is the best choice for every home.
Inverter split air conditioners
Needs assessment- What it does
- An indoor unit and an outdoor unit joined by refrigerant pipework. The compressor speed varies to match demand instead of switching fully on and off.
- Where it may suit
- Individual rooms, or several rooms each with its own unit.
Variable-speed operation can make some units quieter and steadier in use. How this affects electricity use depends on the unit, how it is used and the room, so we make no savings claim. The electrical supply still needs to be correct for the unit.
Conventional (fixed-speed) split air conditioners
Needs assessment- What it does
- The same split layout, but the compressor runs at full speed and cycles on and off to hold temperature.
- Where it may suit
- Rooms where a simple, lower-cost unit suits the budget and usage.
A fixed-speed compressor draws a high starting current each time it starts, which matters on inverter, solar or generator supplies. Installation complexity is similar to an inverter split.
Multi-split systems
Needs assessment- What it does
- One outdoor unit serves several indoor units in different rooms.
- Where it may suit
- Homes with several rooms to cool where outdoor space for many separate units is limited.
Fewer outdoor units can tidy up an elevation, but one outdoor unit serves all rooms connected to it, pipework runs are longer and capacity combinations are limited by the manufacturer. Suitability is confirmed at assessment.
Ducted air-conditioning systems
Needs assessment- What it does
- A central unit delivers cooled air through ducts to grilles in several rooms, with the equipment hidden in the ceiling or a plant space.
- Where it may suit
- New builds and major renovations where ceiling voids and plant space can be planned in.
Ductwork needs space, careful design and access for maintenance, so ducted systems are normally planned early. Retrofitting them into a finished home is often disruptive and may not be possible.
Ceiling cassette systems
Needs assessment- What it does
- An indoor unit set into the ceiling that blows air in several directions, connected to an outdoor unit.
- Where it may suit
- Larger open rooms and some commercial-style living spaces with a suitable ceiling void.
Needs ceiling space for the unit and a route for condensate drainage. Layout and ceiling construction decide whether it is practical.
Portable air conditioners
Depends on the property- What it does
- A freestanding unit that cools a room and vents hot air outside through a hose.
- Where it may suit
- Temporary or rented spaces where fixed installation is not possible.
Portable units are generally less capable than fixed systems and still need an outlet to the outside and a suitable supply. We treat them as a stop-gap, not a recommended permanent solution.
VRF / VRV systems
Needs assessment- What it does
- Variable refrigerant flow: one outdoor system serves many indoor units, with refrigerant volume adjusted to each room’s demand.
- Where it may suit
- Large or complex residences with many rooms or zones.
These are engineered systems with higher design and installation complexity, and they call for a professional design, commissioning and maintenance access. They are usually considered for larger properties.
Equipment selection depends on a proper assessment of your home. We make no claims about energy savings or operating costs without one.
Find the right HVAC system
Answer a few questions for a preliminary view of what an assessment would look at. It takes about three minutes and nothing is sent until you submit our enquiry form.
Your property
Single-split, multi-split, ducted and VRF/VRV
A general guide to how the four common air-conditioning approaches differ. None is always the cheapest or the most efficient.
Single-split
- Suitable applications
- Individual rooms or small spaces.
- Indoor-unit arrangement
- One indoor unit per outdoor unit.
- Outdoor-unit requirements
- One outdoor unit for each indoor unit.
- Installation complexity
- Generally the least complex of the four.
- Room-by-room control
- Each room has its own unit and control.
- Ductwork requirements
- None.
- Maintenance considerations
- Each indoor and outdoor unit is serviced separately.
- Site assessment recommended?
- Recommended, to size the unit and plan pipework and supply.
Multi-split
- Suitable applications
- Homes with several rooms and limited outdoor space.
- Indoor-unit arrangement
- Several indoor units on one outdoor unit.
- Outdoor-unit requirements
- One outdoor unit serves several indoor units, within the manufacturer’s limits.
- Installation complexity
- More complex than a single-split, with longer pipework runs.
- Room-by-room control
- Rooms are controlled separately, but all share one outdoor unit.
- Ductwork requirements
- None for wall units; ducted indoor units add ductwork.
- Maintenance considerations
- A fault in the shared outdoor unit can affect every connected room.
- Site assessment recommended?
- Recommended, to check capacity combinations and pipework routes.
Ducted
- Suitable applications
- New builds and renovations where ceiling voids are available.
- Indoor-unit arrangement
- Concealed central unit supplying grilles in several rooms.
- Outdoor-unit requirements
- Outdoor unit sized for the whole ducted system.
- Installation complexity
- High, because ducts need design, space and sealing.
- Room-by-room control
- Depends on whether the system is zoned.
- Ductwork requirements
- Required, and needs space and access.
- Maintenance considerations
- Filters and ducts need access; hidden equipment needs planned access.
- Site assessment recommended?
- Strongly recommended, ideally during design.
VRF / VRV
- Suitable applications
- Large or complex residences with many rooms or zones.
- Indoor-unit arrangement
- Many indoor units of different types on one system.
- Outdoor-unit requirements
- One or more outdoor units serve the whole system.
- Installation complexity
- Highest: engineered design and commissioning needed.
- Room-by-room control
- Individual room control is a strength of these systems.
- Ductwork requirements
- Only if ducted indoor units are used.
- Maintenance considerations
- Needs a qualified maintenance plan and access.
- Site assessment recommended?
- Essential, with professional design.
This is a general comparison for orientation. Which approach suits your home is confirmed at assessment.
Residential HVAC packages
Indicative service scopes. The final scope for your job is set out in the quotation, and not every task is included in every job.
- 01
Room Cooling
For individual rooms
Possible scope
- Site assessment
- Cooling-load review
- Equipment selection
- Suitable electrical connection
- Condensate drainage
- Installation, testing and commissioning
- 02
Whole-Home Comfort
For family homes and duplexes
Possible scope
- Room-by-room assessment
- Equipment selection
- Electrical requirements
- Bathroom and kitchen extraction review
- Controls and operating requirements
- 03
Premium Residential HVAC
For large residences
Possible scope
- Assessment of multi-split, ducted or VRF/VRV options
- Zoning and control planning where justified
- Ventilation coordination
- Equipment and maintenance access planning
- Commissioning and handover documentation
- 04
Indoor Air Quality
For properties with identified ventilation or air-quality concerns
Possible scope
- Indoor-condition assessment
- Ventilation review
- Filtration options
- Humidity monitoring
- Dehumidification options where appropriate
- 05
HVAC Maintenance
For existing installations
Possible scope
- Filter inspection and cleaning
- Coil and drainage inspection
- Electrical connection and control checks
- Performance checks
- Maintenance recommendations
Packages are indicative. Prices, warranties, response times and service guarantees are not stated here; request a quotation and we will scope it against your property.
From assessment to maintenance
Where it applies to the agreed scope, the work includes equipment schedules, installation checks and commissioning records.
Assess
We visit, look at each room and its exposure, and review the existing electrical supply and any equipment already installed.
Design
We select equipment against the assessed load and prepare a proposal. Where the project calls for it this includes an equipment schedule.
Install
Units, pipework, drainage and electrical connections are installed to the agreed design and the manufacturers’ instructions.
Test and hand over
Installation checks and commissioning are carried out, with records provided as agreed in the project scope.
Maintain
Filters, coils and drains need regular attention. We can support servicing and preventive maintenance.
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Related services
- Electrical wiring and installation →Circuits, breakers and isolation for AC units and the load they add.
- Solar and inverter systems →Backup power sized with air conditioning load in mind.
- Home automation →Controls and scheduling for compatible equipment.
- Preventive maintenance →Planned inspection and servicing for installed equipment.
- Generator installation and maintenance →Standby supply, with equipment loads checked first.
- Earthing and lightning protection →Protection that supports safe operation of installed equipment.
- Residential services →How we work in homes, from wiring to solar and security.
Common questions
What HVAC system is suitable for a Nigerian home?
It depends on the home. Single rooms often suit a split unit. Several rooms may suit separate splits or a multi-split. Ducted and VRF/VRV systems are usually considered for new builds and larger residences. No system is best for every home; the choice follows from the layout, usage, budget and the electrical supply.
What is the difference between split and inverter AC?
Split describes the layout: an indoor and an outdoor unit joined by pipework. Inverter describes the compressor: its speed varies to match demand rather than switching fully on and off. A split unit can be inverter or fixed-speed. How much either affects running cost depends on the unit and how it is used.
How do I know what AC capacity my room requires?
It needs a cooling-load assessment, not a rule of thumb. Room size alone, or the number of bedrooms, is not enough: orientation, sun on the walls and windows, glazing, occupancy, equipment in the room, ventilation and the building’s construction all matter. We assess these on site and do not set a capacity from an online form.
Is a multi-split system suitable for a duplex?
It can be, but it is not automatically the right choice. A multi-split reduces the number of outdoor units but ties the rooms to shared equipment and has manufacturer limits on connections and pipework length. Separate splits, ducted or VRF may suit better. We compare options on site.
Does an AC provide fresh air?
A normal split air conditioner recirculates the air already in the room; it does not bring in outdoor air. Fresh air needs ventilation, such as extract fans or a mechanical fresh-air system. If rooms feel stuffy, ventilation is worth reviewing.
Why does an air conditioner produce water?
Cooling air also removes moisture from it, and that water condenses on the cold coil. It needs a drain, so a properly installed air conditioner has a condensate drain that carries it away. Water dripping inside the room can point to a blocked or badly sloped drain, or a dirty filter or coil, and is worth having checked.
When should AC filters be cleaned?
Follow the manufacturer’s instructions, and clean or replace filters more often in dusty conditions. Blocked filters reduce airflow and cooling. Servicing also covers coils and drains, which owners cannot easily reach.
Can HVAC equipment operate with an inverter or solar system?
Sometimes, but it is not guaranteed. Air conditioners draw a high starting current and a large continuous load, so the inverter, batteries and wiring must be sized for them. We check equipment ratings, starting behaviour, the electrical supply and the backup system before saying whether a given setup will work.
Does the installation require a dedicated electrical circuit?
Air conditioners are normally supplied on their own correctly rated circuit with suitable protection and a local means of isolation, but the exact requirement depends on the unit and the installation. This is confirmed against the manufacturer’s instructions and your electrical supply.
How can I reduce unnecessary cooling costs?
Start with the basics: keep filters and coils clean, reduce heat entering the room, and make sure the equipment is correctly sized and installed. We do not promise a particular saving, because it depends on the building, the equipment and how it is used.
Can existing AC equipment be assessed before replacement?
Yes. We can inspect existing units, pipework and the electrical supply to see whether repair, servicing or reuse makes sense before replacement is considered.
How do I request an HVAC assessment?
Use the questionnaire on this page and continue to our enquiry form, call us, or book a site visit. Nothing is sent until you submit the enquiry form yourself.
Ready for an HVAC assessment?
Tell us about your home and how you use it. We will look at it properly and come back with a scoped assessment.