You can upgrade an old analog CCTV system without re-wiring the building: keep the existing coax cable and swap the recorder and cameras for HD-over-coax models (HD-CVI, HD-TVI or AHD), or move to IP cameras using Ethernet-over-coax adapters on the same coax runs. Reusing coax avoids opening walls and ceilings, which is the biggest cost of a new install. The right path depends on the cable condition, the resolution you want and whether you want to add features such as smart detection. This page compares the four upgrade paths and what to check before you decide. Pixl gives a free written quote for wired CCTV, and you pay after the job.
PCBy the Pixl Canada install team. Updated October 26, 2026. 7 min read. Prices in Canadian dollars, before tax.
- Four upgrade paths compared
- When reusing coax makes sense
- Cable condition checklist
- Free written quote, pay after the job
- The biggest cost of a new system is running cable. Reusing coax avoids most of it.
- HD-over-coax is the simplest swap. IP over coax gives the most features.
- Check the coax, connectors and power supplies before you commit.
- If the cable is damaged or too long, a new PoE run may be the better value.
What are the ways to upgrade an analog system?
| Path | What changes | Reuses coax? | Best for |
|---|---|---|---|
| 1. HD-over-coax (HD-CVI, HD-TVI, AHD) | New DVR and HD cameras, same coax | Yes | The simplest sharper-picture upgrade on a budget |
| 2. IP over coax (Ethernet-over-coax adapters) | New NVR and IP cameras, with adapters at each end of the coax | Yes | Getting IP features without new cable |
| 3. New PoE (Cat6) cabling | New cables, switch, NVR and IP cameras | No | Long-term quality and flexibility. See PoE camera system |
| 4. Keep the old cameras, replace only the recorder | A newer DVR that accepts old analog cameras | Yes | Short-term, to add storage and remote viewing |
What should you check before reusing coax?
| Check | Why it matters |
|---|---|
| Cable type and length | Distance limits depend on the cable and the format. Check the maker’s chart |
| Condition of connectors and runs | Corroded or damaged cable causes noise and dropouts |
| Cable route and access | You must be able to reach both ends |
| Power at each camera | Analog cameras often use separate power supplies |
| Resolution you want | Higher resolutions may need shorter or better cable |
| Features you want | Smart detection and remote features are strongest on IP |
Which path should you choose?
| Situation | Usually the better fit |
|---|---|
| Tight budget, a sharper picture is the goal | HD-over-coax |
| Want IP features, cannot open walls | IP over coax |
| New renovation or open ceilings | New PoE cabling |
| Cable is damaged, very long or low quality | New PoE cabling |
| System works but footage is lost or short | New recorder with more storage |
See NVR vs DVR for the difference between recorder types and the NVR buying guide for IP recorders.
Upgrading an analog CCTV system: frequently asked questions
Can I upgrade analog cameras without rewiring?
Often yes, by reusing the coax with HD-over-coax cameras or Ethernet-over-coax adapters.
Is HD-over-coax as good as IP?
It gives a much sharper picture than old analog. IP offers more features and flexibility.
Do I need a new recorder?
Usually yes. HD cameras need a compatible DVR and IP cameras need an NVR.
When should I replace the cable?
If it is damaged, very long or poor quality, or if you want a full PoE system.
How much does an upgrade cost?
It depends on the number of cameras and the path. Pixl gives a free written quote for wired CCTV.
When do I pay?
After the job.
Not sure which upgrade fits?
Send photos of the recorder and a few cameras. Free written quote. You pay after the job.
Types of CCTV cameras
CCTV cable guide
Add cameras to an existing system
What a professional CCTV visit includes
Sources and method. General guidance on common upgrade paths. Distance limits and compatibility depend on the equipment, so check the manufacturer’s information. Pixl installs the equipment you choose and gives a free written quote.
About Pixl Canada. Pixl Canada is an installation company based in Edmonton, Alberta, serving cities across Canada with TV mounting, security cameras, appliance installation and smart home setup. Call or text (587) 899-7495. Open Monday to Saturday 8am to 8pm and Sunday 9am to 7pm.