What size system do I need?

Sizing depends on your square footage, ceiling height, insulation, and climate. We can help estimate the BTU you need, since an oversized unit cycles too often and cools less evenly.

Single zone or multi zone?

A single-zone unit conditions one room from one outdoor unit, while a multi-zone system runs several indoor heads off one condenser. Your room layout decides which makes sense.

Does it need professional installation?

Most mini-splits need a licensed technician for the refrigerant line set and electrical, though some pre-charged kits are designed for capable DIY. Confirm the requirement before you buy.

Does it heat as well as cool, and how efficient is it?

Most mini-splits are heat pumps that both heat and cool. Look at the SEER2 and HSPF ratings in the specs to compare efficiency and expected running costs.

Senville

18000 BTU Ductless Mini Split System & Heat Pump | SENL/18CD

Senville 18000 BTU Ductless Mini Split System & Heat Pump | SENL/18CD is a Senville ductless mini-split: inverter compressor, whisper-grade indoor blower, full heat-pump operation for residential and light commercial climate work. Across a multi-zone install, individual indoor units handle their own thermostat and setpoint, the family room comfortable at one temperature, the home office at another, all driven by the same outdoor condenser.

$969.99 / each

Price Promise

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✓ Ships nationwide✓ Flat-rate nationwide freight

Overview

About this product

Senville 18000 BTU Ductless Mini Split System & Heat Pump | SENL/18CD is a Senville ductless mini-split: inverter compressor, whisper-grade indoor blower, full heat-pump operation for residential and light commercial climate work. Across a multi-zone install, individual indoor units handle their own thermostat and setpoint, the family room comfortable at one temperature, the home office at another, all driven by the same outdoor condenser. Inverter compression keeps the outdoor unit modulating rather than cycling, which translates to lower noise, lower utility bills, and longer compressor life than older single-stage alternatives.

Once installed by HVAC trade, the indoor unit absorbs the room's climate management with whisper-grade blower noise and inverter-compressor efficiency, the kind of system that runs without announcing itself. Refrigerant line set, electrical service, and condensate management are handled by HVAC trade during install; the system ships pre-charged for direct service hookup.

Quality & Assurance

Sourced direct from leading manufacturers for first-quality goods.

Every order is reviewed before it ships.

Natural materials may vary slightly in shade and texture.

Carefully packaged to arrive in pristine, ready-to-use condition.

Specifications

BrandSenville

TypeMini Split Air Conditioner

Installation KitNone, 16 Ft., 25 Ft., 50 Ft.

SKUSENL-18CD-NONE

Material

Actual Size

Thickness

Pieces / Box

Finish

Tile Look

Color Variation

DCOF

PEI Rating

Sold ByEach (SQFT pricing)

Coverage / each0.0 sq ft

Good to Know

Fast processing

Most orders are processed and on their way within 2–5 business days. You’ll receive tracking the moment your order ships.

Expert support

Talk to a specialist for sizing, pairings, or any product question. Our team is here before and after every order.

Nationwide freight

Every order in the 48 contiguous states ships by LTL freight for a flat $350, curbside with liftgate. Alaska and Hawaii orders ship by freight quote. Email sales@citadelspaces.com or call (916) 223-5762 before ordering and we will arrange it. Orders are processed in 2 to 5 business days, then 4 to 7 business days in transit.

The Build

Built for the spaces you live in

Premium materials, vetted for finish and durability, delivered nationwide and ready for the install that lasts.

Client Voices

What Our Clients Say

Real Google reviews from Citadel clients nationwide, shown unedited and newest first.

5.0★★★★★Google reviews · newest first

Why Citadel

A Surfaces Superstore, Built For The Trade

Family-run, Citadel brings 5,000+ premium surfaces from the brands you trust under one roof, at wholesale-direct pricing, with nationwide freight delivery. No membership, no markup games, just specialists who know the material.

5,000+Surfaces

WholesaleDirect Pricing

50States Shipped

Showroom5855 Power Inn Rd, Sacramento

Call(916) 223-5762

HoursMon–Fri · 9–5 PST

Talk To A Specialist Visit The Showroom

Common Questions

ORDERING & SUPPORT

The questions our counter answers most, before the first box ships.

Talk to Our Team

Is this suitable for my application?+

Each product lists its wear layer, finish, and use ratings in the Specifications above, so you can match it to residential, commercial, or wet-area use. If you are not sure it fits your project, our specialists will review the details and confirm the right product before you order.

What is the lead time?+

Most in-stock orders are processed within 2-5 business days, then ship by ground or LTL freight depending on size and weight. Transit time varies by destination, and any made-to-order item shows its expected production window at checkout.

Do you price-match the trade?+

Yes. Builders, designers, and developers unlock trade pricing through our Developer Program. Apply once and your account receives member pricing across categories, plus dedicated support for large-volume orders.

How do I make sure the color matches?+

Screens and lighting vary, so our specialists will confirm the exact color, finish, and texture details with you before you commit. For larger orders we pull from the same dye lot where possible, and a small overage helps keep everything consistent.

What if my freight arrives damaged?+

Inspect your shipment on arrival. If anything is damaged, photograph it before unloading, note it with the LTL driver on the delivery receipt, and report it to us the same day, so we can file the carrier claim and ship free replacements.

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